51499242 has 24 divisors (see below), whose sum is σ = 112057920. Its totient is φ = 17093160.

The previous prime is 51499223. The next prime is 51499247. The reversal of 51499242 is 24299415.

It is a junction number, because it is equal to n+sod(n) for n = 51499197 and 51499206.

It is not an unprimeable number, because it can be changed into a prime (51499247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1684 + ... + 10287.

It is an arithmetic number, because the mean of its divisors is an integer number (4669080).

Almost surely, 2^51499242 is an apocalyptic number.

51499242 is an abundant number, since it is smaller than the sum of its proper divisors (60558678).

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

51499242 is a wasteful number, since it uses less digits than its factorization.

51499242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12218 (or 12215 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 51499242 is about 7176.2972346468. The cubic root of 51499242 is about 372.0491176906.

The spelling of 51499242 in words is "fifty-one million, four hundred ninety-nine thousand, two hundred forty-two".