275815397 has 16 divisors (see below), whose sum is σ = 326050368. Its totient is φ = 230014080.

The previous prime is 275815313. The next prime is 275815409. The reversal of 275815397 is 793518572.

It is a cyclic number.

It is not a de Polignac number, because 275815397 - 2¹⁰ = 275814373 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 (275815597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17393 + ... + 29225.

It is an arithmetic number, because the mean of its divisors is an integer number (20378148).

Almost surely, 2^275815397 is an apocalyptic number.

It is an amenable number.

275815397 is a deficient number, since it is larger than the sum of its proper divisors (50234971).

275815397 is a wasteful number, since it uses less digits than its factorization.

275815397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12020.

The product of its digits is 529200, while the sum is 47.

The square root of 275815397 is about 16607.6908990985. The cubic root of 275815397 is about 650.9378155063.

The spelling of 275815397 in words is "two hundred seventy-five million, eight hundred fifteen thousand, three hundred ninety-seven".