51955488 has 72 divisors (see below), whose sum is σ = 159125148. Its totient is φ = 15985152.

The previous prime is 51955471. The next prime is 51955499. The reversal of 51955488 is 88455915.

It is a happy number.

51955488 is a `hidden beast` number, since 5 + 19 + 554 + 88 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 42146064 + 9809424 = 6492^2 + 3132^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3195 + ... + 10682.

Almost surely, 2^51955488 is an apocalyptic number.

It is an amenable number.

51955488 is an abundant number, since it is smaller than the sum of its proper divisors (107169660).

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

51955488 is a wasteful number, since it uses less digits than its factorization.

51955488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13906 (or 13895 counting only the distinct ones).

The product of its digits is 288000, while the sum is 45.

The square root of 51955488 is about 7208.0155382740. The cubic root of 51955488 is about 373.1445842940.

The spelling of 51955488 in words is "fifty-one million, nine hundred fifty-five thousand, four hundred eighty-eight".