51442908 has 72 divisors (see below), whose sum is σ = 134064000. Its totient is φ = 15338400.

The previous prime is 51442907. The next prime is 51442931. The reversal of 51442908 is 80924415.

51442908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51442907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102843 + ... + 103341.

It is an arithmetic number, because the mean of its divisors is an integer number (1862000).

Almost surely, 2^51442908 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 51442908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67032000).

51442908 is an abundant number, since it is smaller than the sum of its proper divisors (82621092).

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

51442908 is a wasteful number, since it uses less digits than its factorization.

51442908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 51442908 is about 7172.3711560404. The cubic root of 51442908 is about 371.9134091439.

The spelling of 51442908 in words is "fifty-one million, four hundred forty-two thousand, nine hundred eight".