51441491 has 8 divisors (see below), whose sum is σ = 52276224. Its totient is φ = 50612040.

The previous prime is 51441487. The next prime is 51441497. The reversal of 51441491 is 19414415.

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 51441491 - 2² = 51441487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51441497) 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, 21350 + ... + 23636.

It is an arithmetic number, because the mean of its divisors is an integer number (6534528).

Almost surely, 2^51441491 is an apocalyptic number.

51441491 is a deficient number, since it is larger than the sum of its proper divisors (834733).

51441491 is a wasteful number, since it uses less digits than its factorization.

51441491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2641.

The product of its digits is 2880, while the sum is 29.

The square root of 51441491 is about 7172.2723735229. The cubic root of 51441491 is about 371.9099943153.

The spelling of 51441491 in words is "fifty-one million, four hundred forty-one thousand, four hundred ninety-one".