520942045 has 8 divisors (see below), whose sum is σ = 673217496. Its totient is φ = 384695616.

The previous prime is 520942027. The next prime is 520942061. The reversal of 520942045 is 540249025.

It can be written as a sum of positive squares in 4 ways, for example, as 13205956 + 507736089 = 3634^2 + 22533^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520942045 - 2⁷ = 520941917 is a prime.

It is a super-2 number, since 2×520942045² = 542761228497564050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520941998 and 520942016.

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, 4007182 + ... + 4007311.

It is an arithmetic number, because the mean of its divisors is an integer number (84152187).

Almost surely, 2^520942045 is an apocalyptic number.

It is an amenable number.

520942045 is a deficient number, since it is larger than the sum of its proper divisors (152275451).

520942045 is a wasteful number, since it uses less digits than its factorization.

520942045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8014511.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 520942045 is about 22824.1548583951. The cubic root of 520942045 is about 804.6304619225.

The spelling of 520942045 in words is "five hundred twenty million, nine hundred forty-two thousand, forty-five".