520149633 has 4 divisors (see below), whose sum is σ = 693532848. Its totient is φ = 346766420.

The previous prime is 520149593. The next prime is 520149647. The reversal of 520149633 is 336941025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 520149633 - 2⁹ = 520149121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520149594 and 520149603.

It is not an unprimeable number, because it can be changed into a prime (520149653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86691603 + ... + 86691608.

It is an arithmetic number, because the mean of its divisors is an integer number (173383212).

Almost surely, 2^520149633 is an apocalyptic number.

It is an amenable number.

520149633 is a deficient number, since it is larger than the sum of its proper divisors (173383215).

520149633 is a wasteful number, since it uses less digits than its factorization.

520149633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173383214.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 520149633 is about 22806.7891865558. The cubic root of 520149633 is about 804.2222767895. Note that the first 4 decimals are identical.

The spelling of 520149633 in words is "five hundred twenty million, one hundred forty-nine thousand, six hundred thirty-three".