51442370 has 32 divisors (see below), whose sum is σ = 107284608. Its totient is φ = 17394048.

The previous prime is 51442343. The next prime is 51442381. The reversal of 51442370 is 7324415.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77 + ... + 10143.

It is an arithmetic number, because the mean of its divisors is an integer number (3352644).

Almost surely, 2^51442370 is an apocalyptic number.

51442370 is an abundant number, since it is smaller than the sum of its proper divisors (55842238).

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

51442370 is a wasteful number, since it uses less digits than its factorization.

51442370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10154.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 51442370 is about 7172.3336509117. Note that the first 3 decimals coincide. The cubic root of 51442370 is about 371.9121126250.

Adding to 51442370 its reverse (7324415), we get a palindrome (58766785).

The spelling of 51442370 in words is "fifty-one million, four hundred forty-two thousand, three hundred seventy".