275621949 has 24 divisors (see below), whose sum is σ = 417643200. Its totient is φ = 174822912.

The previous prime is 275621947. The next prime is 275621953. The reversal of 275621949 is 949126572.

It is not a de Polignac number, because 275621949 - 2¹ = 275621947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275621947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36502 + ... + 43400.

It is an arithmetic number, because the mean of its divisors is an integer number (17401800).

Almost surely, 2^275621949 is an apocalyptic number.

It is an amenable number.

275621949 is a deficient number, since it is larger than the sum of its proper divisors (142021251).

275621949 is a wasteful number, since it uses less digits than its factorization.

275621949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7121 (or 7118 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 275621949 is about 16601.8658288760. The cubic root of 275621949 is about 650.7855976694.

The spelling of 275621949 in words is "two hundred seventy-five million, six hundred twenty-one thousand, nine hundred forty-nine".