51355912 has 16 divisors (see below), whose sum is σ = 101956860. Its totient is φ = 24167424.

The previous prime is 51355907. The next prime is 51355919. The reversal of 51355912 is 21955315.

It can be written as a sum of positive squares in 2 ways, for example, as 51351556 + 4356 = 7166^2 + 66^2 .

It is not an unprimeable number, because it can be changed into a prime (51355919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188673 + ... + 188944.

Almost surely, 2^51355912 is an apocalyptic number.

It is an amenable number.

51355912 is a deficient number, since it is larger than the sum of its proper divisors (50600948).

51355912 is a wasteful number, since it uses less digits than its factorization.

51355912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377640 (or 377636 counting only the distinct ones).

The product of its digits is 6750, while the sum is 31.

The square root of 51355912 is about 7166.3039288046. The cubic root of 51355912 is about 371.7036410985.

The spelling of 51355912 in words is "fifty-one million, three hundred fifty-five thousand, nine hundred twelve".