56553071 has 4 divisors (see below), whose sum is σ = 56713632. Its totient is φ = 56392512.

The previous prime is 56553059. The next prime is 56553073. The reversal of 56553071 is 17035565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56553071 - 2¹⁴ = 56536687 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 (56553073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79751 + ... + 80456.

It is an arithmetic number, because the mean of its divisors is an integer number (14178408).

Almost surely, 2^56553071 is an apocalyptic number.

56553071 is a deficient number, since it is larger than the sum of its proper divisors (160561).

56553071 is a wasteful number, since it uses less digits than its factorization.

56553071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160560.

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 56553071 is about 7520.1775909881. The cubic root of 56553071 is about 383.8416207936.

The spelling of 56553071 in words is "fifty-six million, five hundred fifty-three thousand, seventy-one".