52508691 has 6 divisors (see below), whose sum is σ = 75845900. Its totient is φ = 35005788.

The previous prime is 52508683. The next prime is 52508717. The reversal of 52508691 is 19680525.

It is a happy number.

It is not a de Polignac number, because 52508691 - 2³ = 52508683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52508671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2917141 + ... + 2917158.

Almost surely, 2^52508691 is an apocalyptic number.

52508691 is a deficient number, since it is larger than the sum of its proper divisors (23337209).

52508691 is a wasteful number, since it uses less digits than its factorization.

52508691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5834305 (or 5834302 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 52508691 is about 7246.2880842539. The cubic root of 52508691 is about 374.4642803764.

The spelling of 52508691 in words is "fifty-two million, five hundred eight thousand, six hundred ninety-one".