51555196 has 36 divisors (see below), whose sum is σ = 113343664. Its totient is φ = 20085120.

The previous prime is 51555191. The next prime is 51555197. The reversal of 51555196 is 69155515.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51555191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4221 + ... + 10996.

Almost surely, 2^51555196 is an apocalyptic number.

It is an amenable number.

51555196 is an abundant number, since it is smaller than the sum of its proper divisors (61788468).

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

51555196 is a wasteful number, since it uses less digits than its factorization.

51555196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15250 (or 15237 counting only the distinct ones).

The product of its digits is 33750, while the sum is 37.

The square root of 51555196 is about 7180.1947048809. The cubic root of 51555196 is about 372.1838128861.

The spelling of 51555196 in words is "fifty-one million, five hundred fifty-five thousand, one hundred ninety-six".