56161253 has 4 divisors (see below), whose sum is σ = 56301708. Its totient is φ = 56020800.

The previous prime is 56161249. The next prime is 56161271. The reversal of 56161253 is 35216165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35216165 = 5 ⋅7043233.

It can be written as a sum of positive squares in 2 ways, for example, as 40424164 + 15737089 = 6358^2 + 3967^2 .

It is a cyclic number.

It is not a de Polignac number, because 56161253 - 2² = 56161249 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 (56161453) 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, 69626 + ... + 70427.

It is an arithmetic number, because the mean of its divisors is an integer number (14075427).

Almost surely, 2^56161253 is an apocalyptic number.

It is an amenable number.

56161253 is a deficient number, since it is larger than the sum of its proper divisors (140455).

56161253 is a wasteful number, since it uses less digits than its factorization.

56161253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140454.

The product of its digits is 5400, while the sum is 29.

The square root of 56161253 is about 7494.0811978521. The cubic root of 56161253 is about 382.9531059438.

The spelling of 56161253 in words is "fifty-six million, one hundred sixty-one thousand, two hundred fifty-three".