51245164 has 24 divisors (see below), whose sum is σ = 92207808. Its totient is φ = 24906000.

The previous prime is 51245149. The next prime is 51245209. The reversal of 51245164 is 46154215.

51245164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42579 + ... + 43765.

It is an arithmetic number, because the mean of its divisors is an integer number (3841992).

Almost surely, 2^51245164 is an apocalyptic number.

It is an amenable number.

51245164 is a deficient number, since it is larger than the sum of its proper divisors (40962644).

51245164 is a wasteful number, since it uses less digits than its factorization.

51245164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485 (or 1483 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 51245164 is about 7158.5727627789. The cubic root of 51245164 is about 371.4362583081.

Adding to 51245164 its reverse (46154215), we get a palindrome (97399379).

The spelling of 51245164 in words is "fifty-one million, two hundred forty-five thousand, one hundred sixty-four".