51172464 has 60 divisors (see below), whose sum is σ = 153785544. Its totient is φ = 14620032.

The previous prime is 51172441. The next prime is 51172477. The reversal of 51172464 is 46427115.

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 11 ways as a sum of consecutive naturals, for example, 8527 + ... + 13230.

Almost surely, 2^51172464 is an apocalyptic number.

It is an amenable number.

51172464 is an abundant number, since it is smaller than the sum of its proper divisors (102613080).

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

51172464 is a wasteful number, since it uses less digits than its factorization.

51172464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21782 (or 21769 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 51172464 is about 7153.4931327289. The cubic root of 51172464 is about 371.2605266319.

Adding to 51172464 its reverse (46427115), we get a palindrome (97599579).

The spelling of 51172464 in words is "fifty-one million, one hundred seventy-two thousand, four hundred sixty-four".