52749942 has 32 divisors (see below), whose sum is σ = 120825600. Its totient is φ = 15039648.

The previous prime is 52749937. The next prime is 52749967. The reversal of 52749942 is 24994725.

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

It is a junction number, because it is equal to n+sod(n) for n = 52749894 and 52749903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24984 + ... + 27012.

It is an arithmetic number, because the mean of its divisors is an integer number (3775800).

Almost surely, 2^52749942 is an apocalyptic number.

52749942 is an abundant number, since it is smaller than the sum of its proper divisors (68075658).

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

52749942 is a wasteful number, since it uses less digits than its factorization.

52749942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660.

The product of its digits is 181440, while the sum is 42.

The square root of 52749942 is about 7262.9155302812. The cubic root of 52749942 is about 375.0368959253.

The spelling of 52749942 in words is "fifty-two million, seven hundred forty-nine thousand, nine hundred forty-two".