51485764 has 12 divisors (see below), whose sum is σ = 98291088. Its totient is φ = 23402600.

The previous prime is 51485747. The next prime is 51485767. The reversal of 51485764 is 46758415.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (51485767) 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, 585022 + ... + 585109.

It is an arithmetic number, because the mean of its divisors is an integer number (8190924).

Almost surely, 2^51485764 is an apocalyptic number.

It is an amenable number.

51485764 is a deficient number, since it is larger than the sum of its proper divisors (46805324).

51485764 is a wasteful number, since it uses less digits than its factorization.

51485764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170146 (or 1170144 counting only the distinct ones).

The product of its digits is 134400, while the sum is 40.

The square root of 51485764 is about 7175.3581095301. The cubic root of 51485764 is about 372.0166582127.

The spelling of 51485764 in words is "fifty-one million, four hundred eighty-five thousand, seven hundred sixty-four".