52891780 has 24 divisors (see below), whose sum is σ = 111225240. Its totient is φ = 21127680.

The previous prime is 52891771. The next prime is 52891799. The reversal of 52891780 is 8719825.

It can be written as a sum of positive squares in 4 ways, for example, as 7974976 + 44916804 = 2824^2 + 6702^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18870 + ... + 21490.

It is an arithmetic number, because the mean of its divisors is an integer number (4634385).

Almost surely, 2^52891780 is an apocalyptic number.

It is an amenable number.

52891780 is an abundant number, since it is smaller than the sum of its proper divisors (58333460).

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

52891780 is a wasteful number, since it uses less digits than its factorization.

52891780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639 (or 3637 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 52891780 is about 7272.6735111649. The cubic root of 52891780 is about 375.3727375367.

The spelling of 52891780 in words is "fifty-two million, eight hundred ninety-one thousand, seven hundred eighty".