51243175 has 6 divisors (see below), whose sum is σ = 63541568. Its totient is φ = 40994520.

The previous prime is 51243169. The next prime is 51243191. The reversal of 51243175 is 57134215.

It is a happy number.

It is not a de Polignac number, because 51243175 - 2³ = 51243167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1024839 + ... + 1024888.

Almost surely, 2^51243175 is an apocalyptic number.

51243175 is a deficient number, since it is larger than the sum of its proper divisors (12298393).

51243175 is a wasteful number, since it uses less digits than its factorization.

51243175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049737 (or 2049732 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 51243175 is about 7158.4338370903. The cubic root of 51243175 is about 371.4314526756.

The spelling of 51243175 in words is "fifty-one million, two hundred forty-three thousand, one hundred seventy-five".