5256557 has 4 divisors (see below), whose sum is σ = 5270460. Its totient is φ = 5242656.

The previous prime is 5256547. The next prime is 5256583. The reversal of 5256557 is 7556525.

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 1976836 + 3279721 = 1406^2 + 1811^2 .

It is a cyclic number.

It is not a de Polignac number, because 5256557 - 2¹² = 5252461 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 (5256547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6368 + ... + 7145.

It is an arithmetic number, because the mean of its divisors is an integer number (1317615).

Almost surely, 2^5256557 is an apocalyptic number.

It is an amenable number.

5256557 is a deficient number, since it is larger than the sum of its proper divisors (13903).

5256557 is a wasteful number, since it uses less digits than its factorization.

5256557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13902.

The product of its digits is 52500, while the sum is 35.

The square root of 5256557 is about 2292.7182556956. The cubic root of 5256557 is about 173.8736586712.

Subtracting 5256557 from its reverse (7556525), we obtain a cube (2299968 = 132³).

The spelling of 5256557 in words is "five million, two hundred fifty-six thousand, five hundred fifty-seven".