274857157 has 8 divisors (see below), whose sum is σ = 284851800. Its totient is φ = 264897024.

The previous prime is 274857151. The next prime is 274857169. The reversal of 274857157 is 751758472.

It can be written as a sum of positive squares in 4 ways, for example, as 83283876 + 191573281 = 9126^2 + 13841^2 .

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 274857157 - 2¹¹ = 274855109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274857151) 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, 8173 + ... + 24829.

It is an arithmetic number, because the mean of its divisors is an integer number (35606475).

Almost surely, 2^274857157 is an apocalyptic number.

It is an amenable number.

274857157 is a deficient number, since it is larger than the sum of its proper divisors (9994643).

274857157 is a wasteful number, since it uses less digits than its factorization.

274857157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17255.

The product of its digits is 548800, while the sum is 46.

The square root of 274857157 is about 16578.8165138529. The cubic root of 274857157 is about 650.1831097530.

The spelling of 274857157 in words is "two hundred seventy-four million, eight hundred fifty-seven thousand, one hundred fifty-seven".