52666780 has 24 divisors (see below), whose sum is σ = 115409952. Its totient is φ = 20150592.

The previous prime is 52666759. The next prime is 52666793. The reversal of 52666780 is 8766625.

It is a congruent number.

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, 56787 + ... + 57706.

It is an arithmetic number, because the mean of its divisors is an integer number (4808748).

Almost surely, 2^52666780 is an apocalyptic number.

It is an amenable number.

52666780 is an abundant number, since it is smaller than the sum of its proper divisors (62743172).

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

52666780 is a wasteful number, since it uses less digits than its factorization.

52666780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114525 (or 114523 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 52666780 is about 7257.1881607135. The cubic root of 52666780 is about 374.8397063071.

The spelling of 52666780 in words is "fifty-two million, six hundred sixty-six thousand, seven hundred eighty".