513488761 has 16 divisors (see below), whose sum is σ = 537868800. Its totient is φ = 489601728.

The previous prime is 513488719. The next prime is 513488783. The reversal of 513488761 is 167884315.

It is a cyclic number.

It is not a de Polignac number, because 513488761 - 2²³ = 505100153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (513488711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1108816 + ... + 1109278.

It is an arithmetic number, because the mean of its divisors is an integer number (33616800).

Almost surely, 2^513488761 is an apocalyptic number.

It is an amenable number.

513488761 is a deficient number, since it is larger than the sum of its proper divisors (24380039).

513488761 is a wasteful number, since it uses less digits than its factorization.

513488761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888.

The product of its digits is 161280, while the sum is 43.

The square root of 513488761 is about 22660.2903997279. The cubic root of 513488761 is about 800.7746460165.

The spelling of 513488761 in words is "five hundred thirteen million, four hundred eighty-eight thousand, seven hundred sixty-one".