53166564 has 48 divisors (see below), whose sum is σ = 150373440. Its totient is φ = 16110720.

The previous prime is 53166551. The next prime is 53166571. The reversal of 53166564 is 46566135.

53166564 is a `hidden beast` number, since 5 + 31 + 66 + 564 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21189 + ... + 23564.

It is an arithmetic number, because the mean of its divisors is an integer number (3132780).

Almost surely, 2^53166564 is an apocalyptic number.

53166564 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

53166564 is an abundant number, since it is smaller than the sum of its proper divisors (97206876).

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

53166564 is a wasteful number, since it uses less digits than its factorization.

53166564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44777 (or 44769 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 53166564 is about 7291.5405779574. The cubic root of 53166564 is about 376.0216620235.

The spelling of 53166564 in words is "fifty-three million, one hundred sixty-six thousand, five hundred sixty-four".