52491519 has 12 divisors (see below), whose sum is σ = 77584936. Its totient is φ = 34180272.

The previous prime is 52491511. The next prime is 52491541. The reversal of 52491519 is 91519425.

52491519 is a `hidden beast` number, since 52 + 4 + 91 + 519 = 666.

It is not a de Polignac number, because 52491519 - 2³ = 52491511 is a prime.

It is a super-2 number, since 2×52491519² = 5510719133854722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52491511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67432 + ... + 68205.

Almost surely, 2^52491519 is an apocalyptic number.

52491519 is a deficient number, since it is larger than the sum of its proper divisors (25093417).

52491519 is a wasteful number, since it uses less digits than its factorization.

52491519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135686 (or 135683 counting only the distinct ones).

The product of its digits is 16200, while the sum is 36.

The square root of 52491519 is about 7245.1031048564. The cubic root of 52491519 is about 374.4234553777.

The spelling of 52491519 in words is "fifty-two million, four hundred ninety-one thousand, five hundred nineteen".