51246642 has 16 divisors (see below), whose sum is σ = 102874752. Its totient is φ = 17018640.

The previous prime is 51246641. The next prime is 51246647. The reversal of 51246642 is 24664215.

It is not an unprimeable number, because it can be changed into a prime (51246641) 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, 14133 + ... + 17384.

It is an arithmetic number, because the mean of its divisors is an integer number (6429672).

Almost surely, 2^51246642 is an apocalyptic number.

51246642 is an abundant number, since it is smaller than the sum of its proper divisors (51628110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51246642 is a wasteful number, since it uses less digits than its factorization.

51246642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31793.

The product of its digits is 11520, while the sum is 30.

The square root of 51246642 is about 7158.6759949030. The cubic root of 51246642 is about 371.4398292305.

The spelling of 51246642 in words is "fifty-one million, two hundred forty-six thousand, six hundred forty-two".