51442951 has 8 divisors (see below), whose sum is σ = 59003424. Its totient is φ = 43935360.

The previous prime is 51442943. The next prime is 51442991. The reversal of 51442951 is 15924415.

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

It is not a de Polignac number, because 51442951 - 2³ = 51442943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51442931) 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, 11110 + ... + 15043.

It is an arithmetic number, because the mean of its divisors is an integer number (7375428).

Almost surely, 2^51442951 is an apocalyptic number.

51442951 is a deficient number, since it is larger than the sum of its proper divisors (7560473).

51442951 is a wasteful number, since it uses less digits than its factorization.

51442951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26441.

The product of its digits is 7200, while the sum is 31.

The square root of 51442951 is about 7172.3741536537. The cubic root of 51442951 is about 371.9135127686.

The spelling of 51442951 in words is "fifty-one million, four hundred forty-two thousand, nine hundred fifty-one".