52256521 has 8 divisors (see below), whose sum is σ = 57238920. Its totient is φ = 47486208.

The previous prime is 52256507. The next prime is 52256531. The reversal of 52256521 is 12565225.

It can be written as a sum of positive squares in 4 ways, for example, as 11155600 + 41100921 = 3340^2 + 6411^2 .

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 52256521 - 2⁵ = 52256489 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 52256521.

It is not an unprimeable number, because it can be changed into a prime (52256531) 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, 52506 + ... + 53491.

It is an arithmetic number, because the mean of its divisors is an integer number (7154865).

Almost surely, 2^52256521 is an apocalyptic number.

It is an amenable number.

52256521 is a deficient number, since it is larger than the sum of its proper divisors (4982399).

52256521 is a wasteful number, since it uses less digits than its factorization.

52256521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106043.

The product of its digits is 6000, while the sum is 28.

The square root of 52256521 is about 7228.8672003295. The cubic root of 52256521 is about 373.8638704053.

The spelling of 52256521 in words is "fifty-two million, two hundred fifty-six thousand, five hundred twenty-one".