51955458 has 8 divisors (see below), whose sum is σ = 103910928. Its totient is φ = 17318484.

The previous prime is 51955447. The next prime is 51955471. The reversal of 51955458 is 85455915.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

51955458 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4329616 + ... + 4329627.

It is an arithmetic number, because the mean of its divisors is an integer number (12988866).

Almost surely, 2^51955458 is an apocalyptic number.

51955458 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51955458 is a wasteful number, since it uses less digits than its factorization.

51955458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8659248.

The product of its digits is 180000, while the sum is 42.

The square root of 51955458 is about 7208.0134572571. The cubic root of 51955458 is about 373.1445124739.

The spelling of 51955458 in words is "fifty-one million, nine hundred fifty-five thousand, four hundred fifty-eight".