51469908 has 24 divisors (see below), whose sum is σ = 137253312. Its totient is φ = 14705664.

The previous prime is 51469907. The next prime is 51469937. The reversal of 51469908 is 80996415.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 51469908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51469907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306285 + ... + 306452.

It is an arithmetic number, because the mean of its divisors is an integer number (5718888).

Almost surely, 2^51469908 is an apocalyptic number.

It is an amenable number.

51469908 is an abundant number, since it is smaller than the sum of its proper divisors (85783404).

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

51469908 is a wasteful number, since it uses less digits than its factorization.

51469908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612751 (or 612749 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 51469908 is about 7174.2531318598. The cubic root of 51469908 is about 371.9784644719.

The spelling of 51469908 in words is "fifty-one million, four hundred sixty-nine thousand, nine hundred eight".