52520999 has 4 divisors (see below), whose sum is σ = 52835664. Its totient is φ = 52206336.

The previous prime is 52520981. The next prime is 52521047. The reversal of 52520999 is 99902525.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 52520999 - 2¹⁶ = 52455463 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 (52520929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157082 + ... + 157415.

It is an arithmetic number, because the mean of its divisors is an integer number (13208916).

Almost surely, 2^52520999 is an apocalyptic number.

52520999 is a deficient number, since it is larger than the sum of its proper divisors (314665).

52520999 is a wasteful number, since it uses less digits than its factorization.

52520999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314664.

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 52520999 is about 7247.1372968918. The cubic root of 52520999 is about 374.4935361448.

The spelling of 52520999 in words is "fifty-two million, five hundred twenty thousand, nine hundred ninety-nine".