56490253 has 2 divisors, whose sum is σ = 56490254. Its totient is φ = 56490252.

The previous prime is 56490223. The next prime is 56490257. The reversal of 56490253 is 35209465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54140164 + 2350089 = 7358^2 + 1533^2 .

It is a cyclic number.

It is not a de Polignac number, because 56490253 - 2¹³ = 56482061 is a prime.

It is a super-2 number, since 2×56490253² = 6382297368008018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56490257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28245126 + 28245127.

It is an arithmetic number, because the mean of its divisors is an integer number (28245127).

Almost surely, 2^56490253 is an apocalyptic number.

It is an amenable number.

56490253 is a deficient number, since it is larger than the sum of its proper divisors (1).

56490253 is an equidigital number, since it uses as much as digits as its factorization.

56490253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 56490253 is about 7515.9998004258. Note that the first 3 decimals coincide. The cubic root of 56490253 is about 383.6994469866.

The spelling of 56490253 in words is "fifty-six million, four hundred ninety thousand, two hundred fifty-three".