51055488 has 256 divisors, whose sum is σ = 176256000. Its totient is φ = 14376960.

The previous prime is 51055441. The next prime is 51055493. The reversal of 51055488 is 88455015.

51055488 is a `hidden beast` number, since 5 + 105 + 548 + 8 = 666.

It is a super-3 number, since 3×51055488³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 646233 + ... + 646311.

It is an arithmetic number, because the mean of its divisors is an integer number (688500).

Almost surely, 2^51055488 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 51055488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88128000).

51055488 is an abundant number, since it is smaller than the sum of its proper divisors (125200512).

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

51055488 is a wasteful number, since it uses less digits than its factorization.

51055488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

The square root of 51055488 is about 7145.3123094796. The cubic root of 51055488 is about 370.9774205665.

The spelling of 51055488 in words is "fifty-one million, fifty-five thousand, four hundred eighty-eight".