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2526428221 = 5347668457
BaseRepresentation
bin1001011010010110…
…0011110000111101
320112001220211222121
42112211203300331
520133231200341
61054410042541
7116415166642
oct22645436075
96461824877
102526428221
111087114a09
125a6119451
13313553755
1419d76ddc9
15ebbeb4d1
hex96963c3d

2526428221 has 4 divisors (see below), whose sum is σ = 2574096732. Its totient is φ = 2478759712.

The previous prime is 2526428213. The next prime is 2526428237. The reversal of 2526428221 is 1228246252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1798184025 + 728244196 = 42405^2 + 26986^2 .

It is a cyclic number.

It is not a de Polignac number, because 2526428221 - 23 = 2526428213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2526428251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23834176 + ... + 23834281.

It is an arithmetic number, because the mean of its divisors is an integer number (643524183).

Almost surely, 22526428221 is an apocalyptic number.

It is an amenable number.

2526428221 is a deficient number, since it is larger than the sum of its proper divisors (47668511).

2526428221 is an equidigital number, since it uses as much as digits as its factorization.

2526428221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47668510.

The product of its digits is 30720, while the sum is 34.

The square root of 2526428221 is about 50263.5874266849. The cubic root of 2526428221 is about 1361.9745361567.

The spelling of 2526428221 in words is "two billion, five hundred twenty-six million, four hundred twenty-eight thousand, two hundred twenty-one".

Divisors: 1 53 47668457 2526428221