51030664 has 16 divisors (see below), whose sum is σ = 95795100. Its totient is φ = 25485312.

The previous prime is 51030649. The next prime is 51030671. The reversal of 51030664 is 46603015.

It can be written as a sum of positive squares in 2 ways, for example, as 51008164 + 22500 = 7142^2 + 150^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4552 + ... + 11080.

Almost surely, 2^51030664 is an apocalyptic number.

It is an amenable number.

51030664 is a deficient number, since it is larger than the sum of its proper divisors (44764436).

51030664 is a wasteful number, since it uses less digits than its factorization.

51030664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7512 (or 7508 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 51030664 is about 7143.5750153547. The cubic root of 51030664 is about 370.9172857550.

Adding to 51030664 its reverse (46603015), we get a palindrome (97633679).

The spelling of 51030664 in words is "fifty-one million, thirty thousand, six hundred sixty-four".