52772813 has 4 divisors (see below), whose sum is σ = 52906140. Its totient is φ = 52639488.

The previous prime is 52772807. The next prime is 52772831. The reversal of 52772813 is 31827725.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37429924 + 15342889 = 6118^2 + 3917^2 .

It is a cyclic number.

It is not a de Polignac number, because 52772813 - 2¹² = 52768717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52772843) 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, 66068 + ... + 66861.

It is an arithmetic number, because the mean of its divisors is an integer number (13226535).

Almost surely, 2^52772813 is an apocalyptic number.

It is an amenable number.

52772813 is a deficient number, since it is larger than the sum of its proper divisors (133327).

52772813 is a wasteful number, since it uses less digits than its factorization.

52772813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133326.

The product of its digits is 23520, while the sum is 35.

The square root of 52772813 is about 7264.4898650903. The cubic root of 52772813 is about 375.0910901681.

The spelling of 52772813 in words is "fifty-two million, seven hundred seventy-two thousand, eight hundred thirteen".