56720153 has 4 divisors (see below), whose sum is σ = 64823040. Its totient is φ = 48617268.

The previous prime is 56720113. The next prime is 56720159. The reversal of 56720153 is 35102765.

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 not a de Polignac number, because 56720153 - 2¹⁶ = 56654617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56720159) 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, 4051433 + ... + 4051446.

It is an arithmetic number, because the mean of its divisors is an integer number (16205760).

Almost surely, 2^56720153 is an apocalyptic number.

It is an amenable number.

56720153 is a deficient number, since it is larger than the sum of its proper divisors (8102887).

56720153 is an equidigital number, since it uses as much as digits as its factorization.

56720153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8102886.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 56720153 is about 7531.2783111501. The cubic root of 56720153 is about 384.2192599987.

The spelling of 56720153 in words is "fifty-six million, seven hundred twenty thousand, one hundred fifty-three".