275561997 has 8 divisors (see below), whose sum is σ = 386753760. Its totient is φ = 174039120.

The previous prime is 275561983. The next prime is 275562029. The reversal of 275561997 is 799165572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 275561997 - 2¹⁹ = 275037709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275561927) 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, 2417154 + ... + 2417267.

It is an arithmetic number, because the mean of its divisors is an integer number (48344220).

Almost surely, 2^275561997 is an apocalyptic number.

It is an amenable number.

275561997 is a deficient number, since it is larger than the sum of its proper divisors (111191763).

275561997 is a wasteful number, since it uses less digits than its factorization.

275561997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4834443.

The product of its digits is 1190700, while the sum is 51.

The square root of 275561997 is about 16600.0601504934. The cubic root of 275561997 is about 650.7384089658.

The spelling of 275561997 in words is "two hundred seventy-five million, five hundred sixty-one thousand, nine hundred ninety-seven".