51595698 has 64 divisors (see below), whose sum is σ = 133125120. Its totient is φ = 12936000.

The previous prime is 51595681. The next prime is 51595741. The reversal of 51595698 is 89659515.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11473 + ... + 15323.

It is an arithmetic number, because the mean of its divisors is an integer number (2080080).

Almost surely, 2^51595698 is an apocalyptic number.

51595698 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51595698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66562560).

51595698 is an abundant number, since it is smaller than the sum of its proper divisors (81529422).

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

51595698 is a wasteful number, since it uses less digits than its factorization.

51595698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903.

The product of its digits is 486000, while the sum is 48.

The square root of 51595698 is about 7183.0145482242. The cubic root of 51595698 is about 372.2812504820.

The spelling of 51595698 in words is "fifty-one million, five hundred ninety-five thousand, six hundred ninety-eight".