520202045 has 16 divisors (see below), whose sum is σ = 716834880. Its totient is φ = 358416000.

The previous prime is 520201999. The next prime is 520202047. The reversal of 520202045 is 540202025.

It is not a de Polignac number, because 520202045 - 2²⁰ = 519153469 is a prime.

It is a super-2 number, since 2×520202045² = 541220335244364050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520202047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247856 + ... + 249945.

It is an arithmetic number, because the mean of its divisors is an integer number (44802180).

Almost surely, 2^520202045 is an apocalyptic number.

520202045 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

520202045 is a deficient number, since it is larger than the sum of its proper divisors (196632835).

520202045 is a wasteful number, since it uses less digits than its factorization.

520202045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497836.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 520202045 is about 22807.9382014245. The cubic root of 520202045 is about 804.2492879158.

Subtracting from 520202045 its sum of digits (20), we obtain a palindrome (520202025).

The spelling of 520202045 in words is "five hundred twenty million, two hundred two thousand, forty-five".