51724977 has 8 divisors (see below), whose sum is σ = 69611616. Its totient is φ = 34160832.

The previous prime is 51724891. The next prime is 51724987. The reversal of 51724977 is 77942715.

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

It is not a de Polignac number, because 51724977 - 2⁸ = 51724721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51724987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80248 + ... + 80889.

It is an arithmetic number, because the mean of its divisors is an integer number (8701452).

Almost surely, 2^51724977 is an apocalyptic number.

It is an amenable number.

51724977 is a deficient number, since it is larger than the sum of its proper divisors (17886639).

51724977 is a wasteful number, since it uses less digits than its factorization.

51724977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161247.

The product of its digits is 123480, while the sum is 42.

The square root of 51724977 is about 7192.0078559468. The cubic root of 51724977 is about 372.5919224219.

The spelling of 51724977 in words is "fifty-one million, seven hundred twenty-four thousand, nine hundred seventy-seven".