51469999 has 16 divisors (see below), whose sum is σ = 62477568. Its totient is φ = 41392512.

The previous prime is 51469973. The next prime is 51470009. The reversal of 51469999 is 99996415.

It is not a de Polignac number, because 51469999 - 2⁵ = 51469967 is a prime.

It is a Duffinian number.

51469999 is a modest number, since divided by 9999 gives 5146 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51469969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61824 + ... + 62650.

It is an arithmetic number, because the mean of its divisors is an integer number (3904848).

Almost surely, 2^51469999 is an apocalyptic number.

51469999 is a deficient number, since it is larger than the sum of its proper divisors (11007569).

51469999 is a wasteful number, since it uses less digits than its factorization.

51469999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374.

The product of its digits is 787320, while the sum is 52.

The square root of 51469999 is about 7174.2594739806. The cubic root of 51469999 is about 371.9786836940.

The spelling of 51469999 in words is "fifty-one million, four hundred sixty-nine thousand, nine hundred ninety-nine".