51161464 has 16 divisors (see below), whose sum is σ = 97279920. Its totient is φ = 25220160.

The previous prime is 51161459. The next prime is 51161479. The reversal of 51161464 is 46416115.

It is a congruent number.

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, 44469 + ... + 45604.

It is an arithmetic number, because the mean of its divisors is an integer number (6079995).

Almost surely, 2^51161464 is an apocalyptic number.

It is an amenable number.

51161464 is a deficient number, since it is larger than the sum of its proper divisors (46118456).

51161464 is a wasteful number, since it uses less digits than its factorization.

51161464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90150 (or 90146 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 51161464 is about 7152.7242362613. The cubic root of 51161464 is about 371.2339227507.

Adding to 51161464 its reverse (46416115), we get a palindrome (97577579).

The spelling of 51161464 in words is "fifty-one million, one hundred sixty-one thousand, four hundred sixty-four".