56567711 has 4 divisors (see below), whose sum is σ = 56980752. Its totient is φ = 56154672.

The previous prime is 56567689. The next prime is 56567717. The reversal of 56567711 is 11776565.

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 56567711 - 2¹⁸ = 56305567 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 (56567717) 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, 206315 + ... + 206588.

It is an arithmetic number, because the mean of its divisors is an integer number (14245188).

Almost surely, 2^56567711 is an apocalyptic number.

56567711 is a deficient number, since it is larger than the sum of its proper divisors (413041).

56567711 is a wasteful number, since it uses less digits than its factorization.

56567711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413040.

The product of its digits is 44100, while the sum is 38.

The square root of 56567711 is about 7521.1509092691. The cubic root of 56567711 is about 383.8747398704.

The spelling of 56567711 in words is "fifty-six million, five hundred sixty-seven thousand, seven hundred eleven".