51465398 has 16 divisors (see below), whose sum is σ = 81275616. Its totient is φ = 24393600.

The previous prime is 51465397. The next prime is 51465413. The reversal of 51465398 is 89356415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51465391) 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, 248 + ... + 10148.

It is an arithmetic number, because the mean of its divisors is an integer number (5079726).

Almost surely, 2^51465398 is an apocalyptic number.

51465398 is a deficient number, since it is larger than the sum of its proper divisors (29810218).

51465398 is a wasteful number, since it uses less digits than its factorization.

51465398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10039.

The product of its digits is 129600, while the sum is 41.

The square root of 51465398 is about 7173.9388065414. The cubic root of 51465398 is about 371.9675994057.

The spelling of 51465398 in words is "fifty-one million, four hundred sixty-five thousand, three hundred ninety-eight".