52311780 has 36 divisors (see below), whose sum is σ = 158679612. Its totient is φ = 13949760.

The previous prime is 52311767. The next prime is 52311811. The reversal of 52311780 is 8711325.

It can be written as a sum of positive squares in 2 ways, for example, as 41062464 + 11249316 = 6408^2 + 3354^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145131 + ... + 145490.

It is an arithmetic number, because the mean of its divisors is an integer number (4407767).

Almost surely, 2^52311780 is an apocalyptic number.

It is an amenable number.

52311780 is an abundant number, since it is smaller than the sum of its proper divisors (106367832).

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

52311780 is a wasteful number, since it uses less digits than its factorization.

52311780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290636 (or 290631 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 52311780 is about 7232.6882968921. The cubic root of 52311780 is about 373.9956055800.

The spelling of 52311780 in words is "fifty-two million, three hundred eleven thousand, seven hundred eighty".