87568051 has 4 divisors (see below), whose sum is σ = 88386552. Its totient is φ = 86749552.

The previous prime is 87568043. The next prime is 87568057. The reversal of 87568051 is 15086578.

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 87568051 - 2³ = 87568043 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87567995 and 87568013.

It is not an unprimeable number, because it can be changed into a prime (87568057) 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, 409090 + ... + 409303.

It is an arithmetic number, because the mean of its divisors is an integer number (22096638).

Almost surely, 2^87568051 is an apocalyptic number.

87568051 is a deficient number, since it is larger than the sum of its proper divisors (818501).

87568051 is a wasteful number, since it uses less digits than its factorization.

87568051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818500.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 87568051 is about 9357.7802389242. The cubic root of 87568051 is about 444.0670620101.

It can be divided in two parts, 8756 and 8051, that added together give a 5-th power (16807 = 7⁵).

The spelling of 87568051 in words is "eighty-seven million, five hundred sixty-eight thousand, fifty-one".