53503686 has 16 divisors (see below), whose sum is σ = 118897200. Its totient is φ = 17834544.

The previous prime is 53503669. The next prime is 53503691. The reversal of 53503686 is 68630535.

It is a self number, because there is not a number n which added to its sum of digits gives 53503686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495351 + ... + 495458.

It is an arithmetic number, because the mean of its divisors is an integer number (7431075).

Almost surely, 2^53503686 is an apocalyptic number.

53503686 is an abundant number, since it is smaller than the sum of its proper divisors (65393514).

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

53503686 is a wasteful number, since it uses less digits than its factorization.

53503686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990820 (or 990814 counting only the distinct ones).

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

The square root of 53503686 is about 7314.6213845967. The cubic root of 53503686 is about 376.8147555989.

The spelling of 53503686 in words is "fifty-three million, five hundred three thousand, six hundred eighty-six".