51652520 has 16 divisors (see below), whose sum is σ = 116218260. Its totient is φ = 20660992.

The previous prime is 51652499. The next prime is 51652547. The reversal of 51652520 is 2525615.

It can be written as a sum of positive squares in 2 ways, for example, as 51638596 + 13924 = 7186^2 + 118^2 .

It is a super-3 number, since 3×51652520³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51652520.

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 3 ways as a sum of consecutive naturals, for example, 645617 + ... + 645696.

Almost surely, 2^51652520 is an apocalyptic number.

It is an amenable number.

51652520 is an abundant number, since it is smaller than the sum of its proper divisors (64565740).

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

51652520 is a wasteful number, since it uses less digits than its factorization.

51652520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291324 (or 1291320 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 51652520 is about 7186.9687629765. The cubic root of 51652520 is about 372.4178639678.

The spelling of 51652520 in words is "fifty-one million, six hundred fifty-two thousand, five hundred twenty".