52490257 has 4 divisors (see below), whose sum is σ = 52600320. Its totient is φ = 52380196.

The previous prime is 52490233. The next prime is 52490323. The reversal of 52490257 is 75209425.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52490257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52490227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54313 + ... + 55270.

It is an arithmetic number, because the mean of its divisors is an integer number (13150080).

Almost surely, 2^52490257 is an apocalyptic number.

It is an amenable number.

52490257 is a deficient number, since it is larger than the sum of its proper divisors (110063).

52490257 is a wasteful number, since it uses less digits than its factorization.

52490257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110062.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 52490257 is about 7245.0160110244. The cubic root of 52490257 is about 374.4204547267.

The spelling of 52490257 in words is "fifty-two million, four hundred ninety thousand, two hundred fifty-seven".