52664138 has 4 divisors (see below), whose sum is σ = 78996210. Its totient is φ = 26332068.

The previous prime is 52664099. The next prime is 52664149. The reversal of 52664138 is 83146625.

52664138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 36156169 + 16507969 = 6013^2 + 4063^2 .

It is a super-2 number, since 2×52664138² = 5547022862566088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52664098 and 52664107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13166033 + ... + 13166036.

Almost surely, 2^52664138 is an apocalyptic number.

52664138 is a deficient number, since it is larger than the sum of its proper divisors (26332072).

52664138 is a wasteful number, since it uses less digits than its factorization.

52664138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26332071.

The product of its digits is 34560, while the sum is 35.

The square root of 52664138 is about 7257.0061320079. The cubic root of 52664138 is about 374.8334383265.

The spelling of 52664138 in words is "fifty-two million, six hundred sixty-four thousand, one hundred thirty-eight".