51915498 has 16 divisors (see below), whose sum is σ = 104188896. Its totient is φ = 17245520.

The previous prime is 51915473. The next prime is 51915499. The reversal of 51915498 is 89451915.

It is not an unprimeable number, because it can be changed into a prime (51915499) 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, 13008 + ... + 16523.

It is an arithmetic number, because the mean of its divisors is an integer number (6511806).

Almost surely, 2^51915498 is an apocalyptic number.

51915498 is an abundant number, since it is smaller than the sum of its proper divisors (52273398).

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

51915498 is a wasteful number, since it uses less digits than its factorization.

51915498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29829.

The product of its digits is 64800, while the sum is 42.

The square root of 51915498 is about 7205.2410091544. The cubic root of 51915498 is about 373.0488235917.

The spelling of 51915498 in words is "fifty-one million, nine hundred fifteen thousand, four hundred ninety-eight".