52138512 has 40 divisors (see below), whose sum is σ = 149658080. Its totient is φ = 17379360.

The previous prime is 52138459. The next prime is 52138517. The reversal of 52138512 is 21583125.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (52138517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59914 + ... + 60777.

It is an arithmetic number, because the mean of its divisors is an integer number (3741452).

Almost surely, 2^52138512 is an apocalyptic number.

It is an amenable number.

52138512 is an abundant number, since it is smaller than the sum of its proper divisors (97519568).

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

52138512 is a wasteful number, since it uses less digits than its factorization.

52138512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120708 (or 120696 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 52138512 is about 7220.7002430512. The cubic root of 52138512 is about 373.5822305680.

It can be divided in two parts, 52138 and 512, that added together give a triangular number (52650 = T₃₂₄).

The spelling of 52138512 in words is "fifty-two million, one hundred thirty-eight thousand, five hundred twelve".