51450164 has 12 divisors (see below), whose sum is σ = 90381984. Its totient is φ = 25626744.

The previous prime is 51450131. The next prime is 51450167. The reversal of 51450164 is 46105415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51450167) 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, 23402 + ... + 25505.

It is an arithmetic number, because the mean of its divisors is an integer number (7531832).

Almost surely, 2^51450164 is an apocalyptic number.

It is an amenable number.

51450164 is a deficient number, since it is larger than the sum of its proper divisors (38931820).

51450164 is a wasteful number, since it uses less digits than its factorization.

51450164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49174 (or 49172 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 51450164 is about 7172.8769681349. The cubic root of 51450164 is about 371.9308943972.

Adding to 51450164 its reverse (46105415), we get a palindrome (97555579).

The spelling of 51450164 in words is "fifty-one million, four hundred fifty thousand, one hundred sixty-four".