52565766 has 16 divisors (see below), whose sum is σ = 114689088. Its totient is φ = 15929000.

The previous prime is 52565749. The next prime is 52565831. The reversal of 52565766 is 66756525.

It is a happy number.

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, 398160 + ... + 398291.

It is an arithmetic number, because the mean of its divisors is an integer number (7168068).

Almost surely, 2^52565766 is an apocalyptic number.

52565766 is an abundant number, since it is smaller than the sum of its proper divisors (62123322).

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

52565766 is a wasteful number, since it uses less digits than its factorization.

52565766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796467.

The product of its digits is 378000, while the sum is 42.

The square root of 52565766 is about 7250.2252378805. The cubic root of 52565766 is about 374.5999075100.

It can be divided in two parts, 5256576 and 6, that multiplied together give a square (31539456 = 5616²).

The spelling of 52565766 in words is "fifty-two million, five hundred sixty-five thousand, seven hundred sixty-six".