51365532 has 24 divisors (see below), whose sum is σ = 125064576. Its totient is φ = 16377328.

The previous prime is 51365513. The next prime is 51365539. The reversal of 51365532 is 23556315.

It is a self number, because there is not a number n which added to its sum of digits gives 51365532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51365539) 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, 92778 + ... + 93329.

It is an arithmetic number, because the mean of its divisors is an integer number (5211024).

Almost surely, 2^51365532 is an apocalyptic number.

It is an amenable number.

51365532 is an abundant number, since it is smaller than the sum of its proper divisors (73699044).

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

51365532 is a wasteful number, since it uses less digits than its factorization.

51365532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186137 (or 186135 counting only the distinct ones).

The product of its digits is 13500, while the sum is 30.

The square root of 51365532 is about 7166.9750941384. The cubic root of 51365532 is about 371.7268488503.

The spelling of 51365532 in words is "fifty-one million, three hundred sixty-five thousand, five hundred thirty-two".