51724057 has 16 divisors (see below), whose sum is σ = 65808000. Its totient is φ = 40301520.

The previous prime is 51724051. The next prime is 51724063. The reversal of 51724057 is 75042715.

It is an interprime number because it is at equal distance from previous prime (51724051) and next prime (51724063).

It is not a de Polignac number, because 51724057 - 2⁷ = 51723929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51724051) 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, 3082 + ... + 10627.

It is an arithmetic number, because the mean of its divisors is an integer number (4113000).

Almost surely, 2^51724057 is an apocalyptic number.

It is an amenable number.

51724057 is a deficient number, since it is larger than the sum of its proper divisors (14083943).

51724057 is a wasteful number, since it uses less digits than its factorization.

51724057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13741 (or 13727 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 51724057 is about 7191.9438957767. The cubic root of 51724057 is about 372.5897133885.

It can be divided in two parts, 5172 and 4057, that added together give a palindrome (9229).

The spelling of 51724057 in words is "fifty-one million, seven hundred twenty-four thousand, fifty-seven".