51652880 has 20 divisors (see below), whose sum is σ = 120093132. Its totient is φ = 20661120.

The previous prime is 51652873. The next prime is 51652889. The reversal of 51652880 is 8825615.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15460624 + 36192256 = 3932^2 + 6016^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 51652880.

It is not an unprimeable number, because it can be changed into a prime (51652889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322751 + ... + 322910.

Almost surely, 2^51652880 is an apocalyptic number.

It is an amenable number.

51652880 is an abundant number, since it is smaller than the sum of its proper divisors (68440252).

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

51652880 is a wasteful number, since it uses less digits than its factorization.

51652880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645674 (or 645668 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 51652880 is about 7186.9938082623. The cubic root of 51652880 is about 372.4187291732.

It can be divided in two parts, 51 and 652880, that multiplied together give a triangular number (33296880 = T₈₁₆₀).

The spelling of 51652880 in words is "fifty-one million, six hundred fifty-two thousand, eight hundred eighty".