521007045 has 32 divisors (see below), whose sum is σ = 898867200. Its totient is φ = 256172544.

The previous prime is 521006989. The next prime is 521007073. The reversal of 521007045 is 540700125.

It is not a de Polignac number, because 521007045 - 2¹⁵ = 520974277 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 248361 + ... + 250449.

It is an arithmetic number, because the mean of its divisors is an integer number (28089600).

Almost surely, 2^521007045 is an apocalyptic number.

It is an amenable number.

521007045 is a deficient number, since it is larger than the sum of its proper divisors (377860155).

521007045 is a wasteful number, since it uses less digits than its factorization.

521007045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3389.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 521007045 is about 22825.5787440319. The cubic root of 521007045 is about 804.6639261728.

The spelling of 521007045 in words is "five hundred twenty-one million, seven thousand, forty-five".