51248723 has 8 divisors (see below), whose sum is σ = 52826976. Its totient is φ = 49694400.

The previous prime is 51248707. The next prime is 51248731. The reversal of 51248723 is 32784215.

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

It is a cyclic number.

It is not a de Polignac number, because 51248723 - 2⁴ = 51248707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51248723.

It is not an unprimeable number, because it can be changed into a prime (51238723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1586 + ... + 10247.

It is an arithmetic number, because the mean of its divisors is an integer number (6603372).

Almost surely, 2^51248723 is an apocalyptic number.

51248723 is a deficient number, since it is larger than the sum of its proper divisors (1578253).

51248723 is a wasteful number, since it uses less digits than its factorization.

51248723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11965.

The product of its digits is 13440, while the sum is 32.

The square root of 51248723 is about 7158.8213415338. The cubic root of 51248723 is about 371.4448569149. Note that the first 3 decimals are identical.

The spelling of 51248723 in words is "fifty-one million, two hundred forty-eight thousand, seven hundred twenty-three".