56667775 has 6 divisors (see below), whose sum is σ = 70268072. Its totient is φ = 45334200.

The previous prime is 56667773. The next prime is 56667797. The reversal of 56667775 is 57776665.

It is not a de Polignac number, because 56667775 - 2¹ = 56667773 is a prime.

It is a super-2 number, since 2×56667775² = 6422473446901250, 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 (56667773) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1133331 + ... + 1133380.

Almost surely, 2^56667775 is an apocalyptic number.

56667775 is a deficient number, since it is larger than the sum of its proper divisors (13600297).

56667775 is a wasteful number, since it uses less digits than its factorization.

56667775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266721 (or 2266716 counting only the distinct ones).

The product of its digits is 1852200, while the sum is 49.

The square root of 56667775 is about 7527.8001434682. The cubic root of 56667775 is about 384.1009549920.

The spelling of 56667775 in words is "fifty-six million, six hundred sixty-seven thousand, seven hundred seventy-five".