520454723 has 2 divisors, whose sum is σ = 520454724. Its totient is φ = 520454722.

The previous prime is 520454719. The next prime is 520454729. The reversal of 520454723 is 327454025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520454723 - 2² = 520454719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520454723.

It is not a weakly prime, because it can be changed into another prime (520454729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260227361 + 260227362.

It is an arithmetic number, because the mean of its divisors is an integer number (260227362).

Almost surely, 2^520454723 is an apocalyptic number.

520454723 is a deficient number, since it is larger than the sum of its proper divisors (1).

520454723 is an equidigital number, since it uses as much as digits as its factorization.

520454723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 32.

The square root of 520454723 is about 22813.4767845675. The cubic root of 520454723 is about 804.3794829747.

The spelling of 520454723 in words is "five hundred twenty million, four hundred fifty-four thousand, seven hundred twenty-three".