51464499 has 4 divisors (see below), whose sum is σ = 68619336. Its totient is φ = 34309664.

The previous prime is 51464467. The next prime is 51464503. The reversal of 51464499 is 99446415.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51464499 - 2⁵ = 51464467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51464499.

It is not an unprimeable number, because it can be changed into a prime (51464429) 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 3 ways as a sum of consecutive naturals, for example, 8577414 + ... + 8577419.

It is an arithmetic number, because the mean of its divisors is an integer number (17154834).

Almost surely, 2^51464499 is an apocalyptic number.

51464499 is a deficient number, since it is larger than the sum of its proper divisors (17154837).

51464499 is a wasteful number, since it uses less digits than its factorization.

51464499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17154836.

The product of its digits is 155520, while the sum is 42.

The square root of 51464499 is about 7173.8761489170. The cubic root of 51464499 is about 371.9654335439.

The spelling of 51464499 in words is "fifty-one million, four hundred sixty-four thousand, four hundred ninety-nine".