51672513 has 8 divisors (see below), whose sum is σ = 71892288. Its totient is φ = 32950544.

The previous prime is 51672487. The next prime is 51672529. The reversal of 51672513 is 31527615.

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 51672513 - 2¹² = 51668417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51670513) 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, 374370 + ... + 374507.

It is an arithmetic number, because the mean of its divisors is an integer number (8986536).

Almost surely, 2^51672513 is an apocalyptic number.

It is an amenable number.

51672513 is a deficient number, since it is larger than the sum of its proper divisors (20219775).

51672513 is a wasteful number, since it uses less digits than its factorization.

51672513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748903.

The product of its digits is 6300, while the sum is 30.

The square root of 51672513 is about 7188.3595486036. The cubic root of 51672513 is about 372.4659080251.

The spelling of 51672513 in words is "fifty-one million, six hundred seventy-two thousand, five hundred thirteen".