51955908 has 12 divisors (see below), whose sum is σ = 121230480. Its totient is φ = 17318632.

The previous prime is 51955901. The next prime is 51955933. The reversal of 51955908 is 80955915.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×51955908² = 5398832752208928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51955908.

It is not an unprimeable number, because it can be changed into a prime (51955901) 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, 2164818 + ... + 2164841.

It is an arithmetic number, because the mean of its divisors is an integer number (10102540).

Almost surely, 2^51955908 is an apocalyptic number.

It is an amenable number.

51955908 is an abundant number, since it is smaller than the sum of its proper divisors (69274572).

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

51955908 is a wasteful number, since it uses less digits than its factorization.

51955908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4329666 (or 4329664 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 42.

The square root of 51955908 is about 7208.0446724476. The cubic root of 51955908 is about 373.1455897720.

The spelling of 51955908 in words is "fifty-one million, nine hundred fifty-five thousand, nine hundred eight".