51444042 has 16 divisors (see below), whose sum is σ = 110802720. Its totient is φ = 15828912.

The previous prime is 51444037. The next prime is 51444067. The reversal of 51444042 is 24044415.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329692 + ... + 329847.

It is an arithmetic number, because the mean of its divisors is an integer number (6925170).

Almost surely, 2^51444042 is an apocalyptic number.

51444042 is an abundant number, since it is smaller than the sum of its proper divisors (59358678).

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

51444042 is a wasteful number, since it uses less digits than its factorization.

51444042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659557.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 51444042 is about 7172.4502089593. The cubic root of 51444042 is about 371.9161419256.

Adding to 51444042 its reverse (24044415), we get a palindrome (75488457).

The spelling of 51444042 in words is "fifty-one million, four hundred forty-four thousand, forty-two".