27172457 has 8 divisors (see below), whose sum is σ = 29616384. Its totient is φ = 24779088.

The previous prime is 27172447. The next prime is 27172471. The reversal of 27172457 is 75427172.

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 27172457 - 2⁴ = 27172441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27172447) 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, 11513 + ... + 13670.

It is an arithmetic number, because the mean of its divisors is an integer number (3702048).

Almost surely, 2^27172457 is an apocalyptic number.

It is an amenable number.

27172457 is a deficient number, since it is larger than the sum of its proper divisors (2443927).

27172457 is a wasteful number, since it uses less digits than its factorization.

27172457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25279.

The product of its digits is 27440, while the sum is 35.

The square root of 27172457 is about 5212.7206907718. The cubic root of 27172457 is about 300.6373745164.

The spelling of 27172457 in words is "twenty-seven million, one hundred seventy-two thousand, four hundred fifty-seven".