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253212371 = 3122735983
BaseRepresentation
bin11110001011110…
…11011011010011
3122122110112001222
433011323123103
51004310243441
641043115255
76163161326
oct1705733323
9578415058
10253212371
1111aa28225
1270972b2b
13405c8909
14258b47bd
151736ad4b
hexf17b6d3

253212371 has 8 divisors (see below), whose sum is σ = 262539264. Its totient is φ = 243957960.

The previous prime is 253212367. The next prime is 253212409. The reversal of 253212371 is 173212352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253212371 - 22 = 253212367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253212371.

It is not an unprimeable number, because it can be changed into a prime (253212361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10955 + ... + 25028.

It is an arithmetic number, because the mean of its divisors is an integer number (32817408).

Almost surely, 2253212371 is an apocalyptic number.

253212371 is a deficient number, since it is larger than the sum of its proper divisors (9326893).

253212371 is a wasteful number, since it uses less digits than its factorization.

253212371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36241.

The product of its digits is 2520, while the sum is 26.

The square root of 253212371 is about 15912.6481454219. The cubic root of 253212371 is about 632.6472723870.

The spelling of 253212371 in words is "two hundred fifty-three million, two hundred twelve thousand, three hundred seventy-one".

Divisors: 1 31 227 7037 35983 1115473 8168141 253212371