51162164 has 24 divisors (see below), whose sum is σ = 91431648. Its totient is φ = 25043040.

The previous prime is 51162151. The next prime is 51162169. The reversal of 51162164 is 46126115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51162169) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 74567 + ... + 75249.

It is an arithmetic number, because the mean of its divisors is an integer number (3809652).

Almost surely, 2^51162164 is an apocalyptic number.

It is an amenable number.

51162164 is a deficient number, since it is larger than the sum of its proper divisors (40269484).

51162164 is a wasteful number, since it uses less digits than its factorization.

51162164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055 (or 1053 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 51162164 is about 7152.7731684991. The cubic root of 51162164 is about 371.2356158386.

Adding to 51162164 its reverse (46126115), we get a palindrome (97288279).

The spelling of 51162164 in words is "fifty-one million, one hundred sixty-two thousand, one hundred sixty-four".