51330742 has 8 divisors (see below), whose sum is σ = 81048600. Its totient is φ = 24314544.

The previous prime is 51330739. The next prime is 51330743. The reversal of 51330742 is 24703315.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51330743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675367 + ... + 675442.

It is an arithmetic number, because the mean of its divisors is an integer number (10131075).

Almost surely, 2^51330742 is an apocalyptic number.

51330742 is a deficient number, since it is larger than the sum of its proper divisors (29717858).

51330742 is a wasteful number, since it uses less digits than its factorization.

51330742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350830.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 51330742 is about 7164.5475781797. The cubic root of 51330742 is about 371.6429060623.

The spelling of 51330742 in words is "fifty-one million, three hundred thirty thousand, seven hundred forty-two".