51240060 has 48 divisors (see below), whose sum is σ = 159415200. Its totient is φ = 13663872.

The previous prime is 51240019. The next prime is 51240073. The reversal of 51240060 is 6004215.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46905 + ... + 47984.

It is an arithmetic number, because the mean of its divisors is an integer number (3321150).

Almost surely, 2^51240060 is an apocalyptic number.

It is an amenable number.

51240060 is an abundant number, since it is smaller than the sum of its proper divisors (108175140).

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

51240060 is a wasteful number, since it uses less digits than its factorization.

51240060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94907 (or 94899 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 51240060 is about 7158.2162582588. The cubic root of 51240060 is about 371.4239262592.

Adding to 51240060 its reverse (6004215), we get a palindrome (57244275).

The spelling of 51240060 in words is "fifty-one million, two hundred forty thousand, sixty".