51240502 has 8 divisors (see below), whose sum is σ = 77067936. Its totient is φ = 25551192.

The previous prime is 51240493. The next prime is 51240547. The reversal of 51240502 is 20504215.

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

It is a self number, because there is not a number n which added to its sum of digits gives 51240502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33598 + ... + 35089.

It is an arithmetic number, because the mean of its divisors is an integer number (9633492).

Almost surely, 2^51240502 is an apocalyptic number.

51240502 is a deficient number, since it is larger than the sum of its proper divisors (25827434).

51240502 is a wasteful number, since it uses less digits than its factorization.

51240502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69062.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 51240502 is about 7158.2471318054. The cubic root of 51240502 is about 371.4249942315.

Adding to 51240502 its reverse (20504215), we get a palindrome (71744717).

It can be divided in two parts, 512 and 40502, that added together give a palindrome (41014).

The spelling of 51240502 in words is "fifty-one million, two hundred forty thousand, five hundred two".