53918778 has 16 divisors (see below), whose sum is σ = 108553536. Its totient is φ = 17853600.

The previous prime is 53918773. The next prime is 53918797. The reversal of 53918778 is 87781935.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53918773) 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, 28851 + ... + 30662.

It is an arithmetic number, because the mean of its divisors is an integer number (6784596).

Almost surely, 2^53918778 is an apocalyptic number.

53918778 is an abundant number, since it is smaller than the sum of its proper divisors (54634758).

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

53918778 is a wasteful number, since it uses less digits than its factorization.

53918778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59669.

The product of its digits is 423360, while the sum is 48.

The square root of 53918778 is about 7342.9406915758. The cubic root of 53918778 is about 377.7867137512.

The spelling of 53918778 in words is "fifty-three million, nine hundred eighteen thousand, seven hundred seventy-eight".