53486538 has 24 divisors (see below), whose sum is σ = 124438752. Its totient is φ = 15281784.

The previous prime is 53486533. The next prime is 53486549. The reversal of 53486538 is 83568435.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 53486538.

It is not an unprimeable number, because it can be changed into a prime (53486533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90670 + ... + 91257.

It is an arithmetic number, because the mean of its divisors is an integer number (5184948).

Almost surely, 2^53486538 is an apocalyptic number.

53486538 is an abundant number, since it is smaller than the sum of its proper divisors (70952214).

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

53486538 is a wasteful number, since it uses less digits than its factorization.

53486538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181946 (or 181939 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 53486538 is about 7313.4491178923. The cubic root of 53486538 is about 376.7744947598.

It can be divided in two parts, 53 and 486538, that added together give a triangular number (486591 = T₉₈₆).

The spelling of 53486538 in words is "fifty-three million, four hundred eighty-six thousand, five hundred thirty-eight".