56153181 has 16 divisors (see below), whose sum is σ = 85708800. Its totient is φ = 32034288.

The previous prime is 56153179. The next prime is 56153197. The reversal of 56153181 is 18135165.

It is not a de Polignac number, because 56153181 - 2¹ = 56153179 is a prime.

It is a super-2 number, since 2×56153181² = 6306359472837522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56153131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13240 + ... + 16958.

It is an arithmetic number, because the mean of its divisors is an integer number (5356800).

Almost surely, 2^56153181 is an apocalyptic number.

It is an amenable number.

56153181 is a deficient number, since it is larger than the sum of its proper divisors (29555619).

56153181 is a wasteful number, since it uses less digits than its factorization.

56153181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448.

The product of its digits is 3600, while the sum is 30.

The square root of 56153181 is about 7493.5426201497. The cubic root of 56153181 is about 382.9347579108.

The spelling of 56153181 in words is "fifty-six million, one hundred fifty-three thousand, one hundred eighty-one".