51108197 has 8 divisors (see below), whose sum is σ = 58474752. Its totient is φ = 43758000.

The previous prime is 51108193. The next prime is 51108199. The reversal of 51108197 is 79180115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51108197 - 2² = 51108193 is a prime.

It is a super-2 number, since 2×51108197² = 5224095601181618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51108191) 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, 3572 + ... + 10722.

It is an arithmetic number, because the mean of its divisors is an integer number (7309344).

Almost surely, 2^51108197 is an apocalyptic number.

It is an amenable number.

51108197 is a deficient number, since it is larger than the sum of its proper divisors (7366555).

51108197 is a wasteful number, since it uses less digits than its factorization.

51108197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8179.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 51108197 is about 7148.9997202406. Note that the first 3 decimals coincide. The cubic root of 51108197 is about 371.1050406940.

The spelling of 51108197 in words is "fifty-one million, one hundred eight thousand, one hundred ninety-seven".