51617196 has 48 divisors (see below), whose sum is σ = 137098080. Its totient is φ = 16784640.

The previous prime is 51617179. The next prime is 51617197. The reversal of 51617196 is 69171615.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51617196.

It is not an unprimeable number, because it can be changed into a prime (51617197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1401 + ... + 10256.

It is an arithmetic number, because the mean of its divisors is an integer number (2856210).

Almost surely, 2^51617196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51617196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68549040).

51617196 is an abundant number, since it is smaller than the sum of its proper divisors (85480884).

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

51617196 is a wasteful number, since it uses less digits than its factorization.

51617196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11711 (or 11703 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 51617196 is about 7184.5108392987. The cubic root of 51617196 is about 372.3329485326.

The spelling of 51617196 in words is "fifty-one million, six hundred seventeen thousand, one hundred ninety-six".