1520502961 has 4 divisors (see below), whose sum is σ = 1522158400. Its totient is φ = 1518847524.

The previous prime is 1520502959. The next prime is 1520503003. The reversal of 1520502961 is 1692050251.

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 1520502961 - 2¹ = 1520502959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1520502941) 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, 826341 + ... + 828178.

It is an arithmetic number, because the mean of its divisors is an integer number (380539600).

Almost surely, 2^1520502961 is an apocalyptic number.

It is an amenable number.

1520502961 is a deficient number, since it is larger than the sum of its proper divisors (1655439).

1520502961 is an equidigital number, since it uses as much as digits as its factorization.

1520502961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655438.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1520502961 is about 38993.6271844516. The cubic root of 1520502961 is about 1149.9062207082.

The spelling of 1520502961 in words is "one billion, five hundred twenty million, five hundred two thousand, nine hundred sixty-one".