51944445 has 48 divisors (see below), whose sum is σ = 103963392. Its totient is φ = 23500800.

The previous prime is 51944393. The next prime is 51944491. The reversal of 51944445 is 54444915.

It is not a de Polignac number, because 51944445 - 2¹⁰ = 51943421 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31645 + ... + 33245.

It is an arithmetic number, because the mean of its divisors is an integer number (2165904).

Almost surely, 2^51944445 is an apocalyptic number.

It is an amenable number.

51944445 is an abundant number, since it is smaller than the sum of its proper divisors (52018947).

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

51944445 is a wasteful number, since it uses less digits than its factorization.

51944445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722 (or 1719 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 51944445 is about 7207.2494753547. The cubic root of 51944445 is about 373.1181454596.

The spelling of 51944445 in words is "fifty-one million, nine hundred forty-four thousand, four hundred forty-five".