51444190 has 64 divisors (see below), whose sum is σ = 110665728. Its totient is φ = 16848000.

The previous prime is 51444157. The next prime is 51444199. The reversal of 51444190 is 9144415.

It is a super-2 number, since 2×51444190² = 5293009369512200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51444199) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 327592 + ... + 327748.

It is an arithmetic number, because the mean of its divisors is an integer number (1729152).

Almost surely, 2^51444190 is an apocalyptic number.

51444190 is an abundant number, since it is smaller than the sum of its proper divisors (59221538).

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

51444190 is a wasteful number, since it uses less digits than its factorization.

51444190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 51444190 is about 7172.4605262072. The cubic root of 51444190 is about 371.9164985819.

The spelling of 51444190 in words is "fifty-one million, four hundred forty-four thousand, one hundred ninety".