51444291 has 8 divisors (see below), whose sum is σ = 69886800. Its totient is φ = 33648992.

The previous prime is 51444269. The next prime is 51444377. The reversal of 51444291 is 19244415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51444291 - 2⁹ = 51443779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51484291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161616 + ... + 161933.

It is an arithmetic number, because the mean of its divisors is an integer number (8735850).

Almost surely, 2^51444291 is an apocalyptic number.

51444291 is a deficient number, since it is larger than the sum of its proper divisors (18442509).

51444291 is a wasteful number, since it uses less digits than its factorization.

51444291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323605.

The product of its digits is 5760, while the sum is 30.

The square root of 51444291 is about 7172.4675670232. The cubic root of 51444291 is about 371.9167419754.

The spelling of 51444291 in words is "fifty-one million, four hundred forty-four thousand, two hundred ninety-one".