51672015 has 24 divisors (see below), whose sum is σ = 89893440. Its totient is φ = 27457344.

The previous prime is 51672011. The next prime is 51672031. The reversal of 51672015 is 51027615.

It is not a de Polignac number, because 51672015 - 2² = 51672011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51672015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51672011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11226 + ... + 15144.

It is an arithmetic number, because the mean of its divisors is an integer number (3745560).

Almost surely, 2^51672015 is an apocalyptic number.

51672015 is a deficient number, since it is larger than the sum of its proper divisors (38221425).

51672015 is a wasteful number, since it uses less digits than its factorization.

51672015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4223 (or 4220 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 51672015 is about 7188.3249091843. The cubic root of 51672015 is about 372.4647114597.

The spelling of 51672015 in words is "fifty-one million, six hundred seventy-two thousand, fifteen".