53909218 has 16 divisors (see below), whose sum is σ = 88361856. Its totient is φ = 24463440.

The previous prime is 53909209. The next prime is 53909239. The reversal of 53909218 is 81290935.

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, 14455 + ... + 17797.

It is an arithmetic number, because the mean of its divisors is an integer number (5522616).

Almost surely, 2^53909218 is an apocalyptic number.

53909218 is a deficient number, since it is larger than the sum of its proper divisors (34452638).

53909218 is a wasteful number, since it uses less digits than its factorization.

53909218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4089.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 53909218 is about 7342.2896973628. The cubic root of 53909218 is about 377.7643847681.

The spelling of 53909218 in words is "fifty-three million, nine hundred nine thousand, two hundred eighteen".