51442256 has 10 divisors (see below), whose sum is σ = 99669402. Its totient is φ = 25721120.

The previous prime is 51442243. The next prime is 51442271. The reversal of 51442256 is 65224415.

It can be written as a sum of positive squares in only one way, i.e., 50410000 + 1032256 = 7100^2 + 1016^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607555 + ... + 1607586.

Almost surely, 2^51442256 is an apocalyptic number.

It is an amenable number.

51442256 is a deficient number, since it is larger than the sum of its proper divisors (48227146).

51442256 is a wasteful number, since it uses less digits than its factorization.

51442256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215149 (or 3215143 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 51442256 is about 7172.3257037031. The cubic root of 51442256 is about 371.9118378968.

The spelling of 51442256 in words is "fifty-one million, four hundred forty-two thousand, two hundred fifty-six".