52691508 has 36 divisors (see below), whose sum is σ = 134447040. Its totient is φ = 17398416.

The previous prime is 52691491. The next prime is 52691531. The reversal of 52691508 is 80519625.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 2988 + ... + 10691.

It is an arithmetic number, because the mean of its divisors is an integer number (3734640).

Almost surely, 2^52691508 is an apocalyptic number.

It is an amenable number.

52691508 is an abundant number, since it is smaller than the sum of its proper divisors (81755532).

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

52691508 is a wasteful number, since it uses less digits than its factorization.

52691508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13796 (or 13791 counting only the distinct ones).

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

The square root of 52691508 is about 7258.8916509340. The cubic root of 52691508 is about 374.8983617883.

The spelling of 52691508 in words is "fifty-two million, six hundred ninety-one thousand, five hundred eight".