56765387 has 4 divisors (see below), whose sum is σ = 64874736. Its totient is φ = 48656040.

The previous prime is 56765377. The next prime is 56765393. The reversal of 56765387 is 78356765.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78356765 = 5 ⋅15671353.

It is a cyclic number.

It is not a de Polignac number, because 56765387 - 2¹² = 56761291 is a prime.

It is a super-2 number, since 2×56765387² = 6444618322519538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56765327) 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, 4054664 + ... + 4054677.

It is an arithmetic number, because the mean of its divisors is an integer number (16218684).

Almost surely, 2^56765387 is an apocalyptic number.

56765387 is a deficient number, since it is larger than the sum of its proper divisors (8109349).

56765387 is an equidigital number, since it uses as much as digits as its factorization.

56765387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8109348.

The product of its digits is 1058400, while the sum is 47.

The square root of 56765387 is about 7534.2807885026. The cubic root of 56765387 is about 384.3213704189.

The spelling of 56765387 in words is "fifty-six million, seven hundred sixty-five thousand, three hundred eighty-seven".