51173267 has 4 divisors (see below), whose sum is σ = 51541560. Its totient is φ = 50804976.

The previous prime is 51173263. The next prime is 51173273. The reversal of 51173267 is 76237115.

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 51173267 - 2² = 51173263 is a prime.

It is a super-5 number, since 5×51173267⁵ (a number of 40 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51173263) 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, 183938 + ... + 184215.

It is an arithmetic number, because the mean of its divisors is an integer number (12885390).

Almost surely, 2^51173267 is an apocalyptic number.

51173267 is a deficient number, since it is larger than the sum of its proper divisors (368293).

51173267 is a wasteful number, since it uses less digits than its factorization.

51173267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368292.

The product of its digits is 8820, while the sum is 32.

The square root of 51173267 is about 7153.5492589343. The cubic root of 51173267 is about 371.2624685659.

The spelling of 51173267 in words is "fifty-one million, one hundred seventy-three thousand, two hundred sixty-seven".