53939718 has 24 divisors (see below), whose sum is σ = 133565328. Its totient is φ = 15411312.

The previous prime is 53939707. The next prime is 53939729. The reversal of 53939718 is 81793935.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53939707) and next prime (53939729).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213921 + ... + 214172.

It is an arithmetic number, because the mean of its divisors is an integer number (5565222).

Almost surely, 2^53939718 is an apocalyptic number.

53939718 is an abundant number, since it is smaller than the sum of its proper divisors (79625610).

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

53939718 is a wasteful number, since it uses less digits than its factorization.

53939718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428108 (or 428105 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 53939718 is about 7344.3664124280. The cubic root of 53939718 is about 377.8356134123.

The spelling of 53939718 in words is "fifty-three million, nine hundred thirty-nine thousand, seven hundred eighteen".