51667444 has 24 divisors (see below), whose sum is σ = 94164840. Its totient is φ = 24775296.

The previous prime is 51667433. The next prime is 51667457. The reversal of 51667444 is 44476615.

It can be written as a sum of positive squares in 4 ways, for example, as 100 + 51667344 = 10^2 + 7188^2 .

It is a congruent 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, 16794 + ... + 19630.

It is an arithmetic number, because the mean of its divisors is an integer number (3923535).

Almost surely, 2^51667444 is an apocalyptic number.

It is an amenable number.

51667444 is a deficient number, since it is larger than the sum of its proper divisors (42497396).

51667444 is a wasteful number, since it uses less digits than its factorization.

51667444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027 (or 3025 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 51667444 is about 7188.0069560345. The cubic root of 51667444 is about 372.4537281683.

The spelling of 51667444 in words is "fifty-one million, six hundred sixty-seven thousand, four hundred forty-four".