51195984 has 60 divisors (see below), whose sum is σ = 153856224. Its totient is φ = 14626752.

The previous prime is 51195983. The next prime is 51196009. The reversal of 51195984 is 48959115.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51195983) 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, 8532 + ... + 13235.

Almost surely, 2^51195984 is an apocalyptic number.

It is an amenable number.

51195984 is an abundant number, since it is smaller than the sum of its proper divisors (102660240).

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

51195984 is a wasteful number, since it uses less digits than its factorization.

51195984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21792 (or 21779 counting only the distinct ones).

The product of its digits is 64800, while the sum is 42.

The square root of 51195984 is about 7155.1368959650. The cubic root of 51195984 is about 371.3173977785.

The spelling of 51195984 in words is "fifty-one million, one hundred ninety-five thousand, nine hundred eighty-four".