51180564 has 12 divisors (see below), whose sum is σ = 119421344. Its totient is φ = 17060184.

The previous prime is 51180541. The next prime is 51180581. The reversal of 51180564 is 46508115.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2132512 + ... + 2132535.

Almost surely, 2^51180564 is an apocalyptic number.

It is an amenable number.

51180564 is an abundant number, since it is smaller than the sum of its proper divisors (68240780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51180564 is a wasteful number, since it uses less digits than its factorization.

51180564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4265054 (or 4265052 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 51180564 is about 7154.0592672971. The cubic root of 51180564 is about 371.2801143253.

Adding to 51180564 its reverse (46508115), we get a palindrome (97688679).

The spelling of 51180564 in words is "fifty-one million, one hundred eighty thousand, five hundred sixty-four".