56213877 has 4 divisors (see below), whose sum is σ = 74951840. Its totient is φ = 37475916.

The previous prime is 56213831. The next prime is 56213887. The reversal of 56213877 is 77831265.

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 56213877 - 2⁷ = 56213749 is a prime.

It is a super-2 number, since 2×56213877² = 6319999934742258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56213887) 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, 9368977 + ... + 9368982.

It is an arithmetic number, because the mean of its divisors is an integer number (18737960).

Almost surely, 2^56213877 is an apocalyptic number.

It is an amenable number.

56213877 is a deficient number, since it is larger than the sum of its proper divisors (18737963).

56213877 is a wasteful number, since it uses less digits than its factorization.

56213877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18737962.

The product of its digits is 70560, while the sum is 39.

The square root of 56213877 is about 7497.5914132473. The cubic root of 56213877 is about 383.0726796833.

The spelling of 56213877 in words is "fifty-six million, two hundred thirteen thousand, eight hundred seventy-seven".