51654723 has 4 divisors (see below), whose sum is σ = 68872968. Its totient is φ = 34436480.

The previous prime is 51654719. The next prime is 51654751. The reversal of 51654723 is 32745615.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51654723 - 2² = 51654719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51654023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8609118 + ... + 8609123.

It is an arithmetic number, because the mean of its divisors is an integer number (17218242).

Almost surely, 2^51654723 is an apocalyptic number.

51654723 is a deficient number, since it is larger than the sum of its proper divisors (17218245).

51654723 is a wasteful number, since it uses less digits than its factorization.

51654723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17218244.

The product of its digits is 25200, while the sum is 33.

The square root of 51654723 is about 7187.1220248442. The cubic root of 51654723 is about 372.4231584813.

The spelling of 51654723 in words is "fifty-one million, six hundred fifty-four thousand, seven hundred twenty-three".