52777720 has 16 divisors (see below), whose sum is σ = 118749960. Its totient is φ = 21111072.

The previous prime is 52777661. The next prime is 52777721. The reversal of 52777720 is 2777725.

52777720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 52777720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52777721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659682 + ... + 659761.

Almost surely, 2^52777720 is an apocalyptic number.

It is an amenable number.

52777720 is an abundant number, since it is smaller than the sum of its proper divisors (65972240).

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

52777720 is a wasteful number, since it uses less digits than its factorization.

52777720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319454 (or 1319450 counting only the distinct ones).

The product of its (nonzero) digits is 48020, while the sum is 37.

The square root of 52777720 is about 7264.8275960273. The cubic root of 52777720 is about 375.1027155665.

The spelling of 52777720 in words is "fifty-two million, seven hundred seventy-seven thousand, seven hundred twenty".