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2053021215 = 35729674227
BaseRepresentation
bin111101001011110…
…1001111000011111
312022002010021122210
41322113221320133
513201033134330
6535415211503
7101606251410
oct17227517037
95262107583
102053021215
11963971253
12493676b93
1326944c96b
1415693b807
15c03878b0
hex7a5e9e1f

2053021215 has 32 divisors (see below), whose sum is σ = 3883553280. Its totient is φ = 906159744.

The previous prime is 2053021163. The next prime is 2053021219. The reversal of 2053021215 is 5121203502.

It is not a de Polignac number, because 2053021215 - 29 = 2053020703 is a prime.

It is a super-2 number, since 2×20530212152 = 8429792218480152450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 2053021191 and 2053021200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2053021219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 334069 + ... + 340158.

It is an arithmetic number, because the mean of its divisors is an integer number (121361040).

Almost surely, 22053021215 is an apocalyptic number.

2053021215 is a deficient number, since it is larger than the sum of its proper divisors (1830532065).

2053021215 is a wasteful number, since it uses less digits than its factorization.

2053021215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674271.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2053021215 is about 45310.2771454777. The cubic root of 2053021215 is about 1270.9578437557.

Adding to 2053021215 its reverse (5121203502), we get a palindrome (7174224717).

The spelling of 2053021215 in words is "two billion, fifty-three million, twenty-one thousand, two hundred fifteen".

Divisors: 1 3 5 7 15 21 29 35 87 105 145 203 435 609 1015 3045 674227 2022681 3371135 4719589 10113405 14158767 19552583 23597945 58657749 70793835 97762915 136868081 293288745 410604243 684340405 2053021215