52666986 has 32 divisors (see below), whose sum is σ = 112891968. Its totient is φ = 16321280.

The previous prime is 52666981. The next prime is 52666997. The reversal of 52666986 is 68966625.

It is a super-2 number, since 2×52666986² = 5547622828648392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52666981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5356 + ... + 11576.

It is an arithmetic number, because the mean of its divisors is an integer number (3527874).

Almost surely, 2^52666986 is an apocalyptic number.

52666986 is an abundant number, since it is smaller than the sum of its proper divisors (60224982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52666986 is a wasteful number, since it uses less digits than its factorization.

52666986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6326.

The product of its digits is 933120, while the sum is 48.

The square root of 52666986 is about 7257.2023535244. The cubic root of 52666986 is about 374.8401950204.

The spelling of 52666986 in words is "fifty-two million, six hundred sixty-six thousand, nine hundred eighty-six".