56266987 has 4 divisors (see below), whose sum is σ = 64305136. Its totient is φ = 48228840.

The previous prime is 56266981. The next prime is 56267011. The reversal of 56266987 is 78966265.

It is a happy number.

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 56266987 - 2¹¹ = 56264939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56266987.

It is not an unprimeable number, because it can be changed into a prime (56266981) 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, 4019064 + ... + 4019077.

It is an arithmetic number, because the mean of its divisors is an integer number (16076284).

Almost surely, 2^56266987 is an apocalyptic number.

56266987 is a deficient number, since it is larger than the sum of its proper divisors (8038149).

56266987 is an equidigital number, since it uses as much as digits as its factorization.

56266987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8038148.

The product of its digits is 1088640, while the sum is 49.

The square root of 56266987 is about 7501.1323811809. The cubic root of 56266987 is about 383.1932820877.

The spelling of 56266987 in words is "fifty-six million, two hundred sixty-six thousand, nine hundred eighty-seven".