51242793 has 16 divisors (see below), whose sum is σ = 78238080. Its totient is φ = 29223936.

The previous prime is 51242761. The next prime is 51242801. The reversal of 51242793 is 39724215.

It is not a de Polignac number, because 51242793 - 2⁵ = 51242761 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51242293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10003 + ... + 14231.

It is an arithmetic number, because the mean of its divisors is an integer number (4889880).

Almost surely, 2^51242793 is an apocalyptic number.

It is an amenable number.

51242793 is a deficient number, since it is larger than the sum of its proper divisors (26995287).

51242793 is a wasteful number, since it uses less digits than its factorization.

51242793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4816.

The product of its digits is 15120, while the sum is 33.

The square root of 51242793 is about 7158.4071552266. The cubic root of 51242793 is about 371.4305297093.

The spelling of 51242793 in words is "fifty-one million, two hundred forty-two thousand, seven hundred ninety-three".