51055872 has 72 divisors (see below), whose sum is σ = 155311296. Its totient is φ = 14585856.

The previous prime is 51055871. The next prime is 51055889. The reversal of 51055872 is 27855015.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51055871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628 + ... + 10124.

Almost surely, 2^51055872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51055872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77655648).

51055872 is an abundant number, since it is smaller than the sum of its proper divisors (104255424).

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

51055872 is an equidigital number, since it uses as much as digits as its factorization.

51055872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9523 (or 9509 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 51055872 is about 7145.3391801929. The cubic root of 51055872 is about 370.9783506328.

The spelling of 51055872 in words is "fifty-one million, fifty-five thousand, eight hundred seventy-two".