275921901 has 12 divisors (see below), whose sum is σ = 399627228. Its totient is φ = 183452544.

The previous prime is 275921861. The next prime is 275921903. The reversal of 275921901 is 109129572.

It can be written as a sum of positive squares in 2 ways, for example, as 54686025 + 221235876 = 7395^2 + 14874^2 .

It is not a de Polignac number, because 275921901 - 2⁷ = 275921773 is a prime.

It is a super-2 number, since 2×275921901² = 152265790902907602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275921903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37740 + ... + 44453.

It is an arithmetic number, because the mean of its divisors is an integer number (33302269).

Almost surely, 2^275921901 is an apocalyptic number.

It is an amenable number.

275921901 is a deficient number, since it is larger than the sum of its proper divisors (123705327).

275921901 is a wasteful number, since it uses less digits than its factorization.

275921901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82572 (or 82569 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 275921901 is about 16610.8970558486. The cubic root of 275921901 is about 651.0215896059.

The spelling of 275921901 in words is "two hundred seventy-five million, nine hundred twenty-one thousand, nine hundred one".