52491428 has 24 divisors (see below), whose sum is σ = 104569920. Its totient is φ = 22821920.

The previous prime is 52491407. The next prime is 52491431. The reversal of 52491428 is 82419425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24923 + ... + 26946.

It is an arithmetic number, because the mean of its divisors is an integer number (4357080).

Almost surely, 2^52491428 is an apocalyptic number.

It is an amenable number.

52491428 is a deficient number, since it is larger than the sum of its proper divisors (52078492).

52491428 is a wasteful number, since it uses less digits than its factorization.

52491428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51907 (or 51905 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 52491428 is about 7245.0968247498. The cubic root of 52491428 is about 374.4232390091.

The spelling of 52491428 in words is "fifty-two million, four hundred ninety-one thousand, four hundred twenty-eight".