52420566 has 32 divisors (see below), whose sum is σ = 118066176. Its totient is φ = 15372000.

The previous prime is 52420561. The next prime is 52420579. The reversal of 52420566 is 66502425.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52420561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10765 + ... + 14856.

It is an arithmetic number, because the mean of its divisors is an integer number (3689568).

Almost surely, 2^52420566 is an apocalyptic number.

52420566 is an abundant number, since it is smaller than the sum of its proper divisors (65645610).

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

52420566 is a wasteful number, since it uses less digits than its factorization.

52420566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25668.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 52420566 is about 7240.2048313566. The cubic root of 52420566 is about 374.2546760718.

The spelling of 52420566 in words is "fifty-two million, four hundred twenty thousand, five hundred sixty-six".