51442336 has 48 divisors (see below), whose sum is σ = 112402080. Its totient is φ = 22977280.

The previous prime is 51442333. The next prime is 51442343. The reversal of 51442336 is 63324415.

51442336 = T₃₅₅ + T₃₅₆ + ... + T₇₀₆.

It is not an unprimeable number, because it can be changed into a prime (51442333) 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, 19530 + ... + 22006.

It is an arithmetic number, because the mean of its divisors is an integer number (2341710).

Almost surely, 2^51442336 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 51442336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56201040).

51442336 is an abundant number, since it is smaller than the sum of its proper divisors (60959744).

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

51442336 is a wasteful number, since it uses less digits than its factorization.

51442336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557 (or 2549 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 51442336 is about 7172.3312806925. The cubic root of 51442336 is about 371.9120306885.

The spelling of 51442336 in words is "fifty-one million, four hundred forty-two thousand, three hundred thirty-six".