275640043 has 24 divisors (see below), whose sum is σ = 327384288. Its totient is φ = 231348096.

The previous prime is 275640037. The next prime is 275640107. The reversal of 275640043 is 340046572.

It is not a de Polignac number, because 275640043 - 2⁹ = 275639531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 275639987 and 275640014.

It is not an unprimeable number, because it can be changed into a prime (275640143) 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, 940605 + ... + 940897.

It is an arithmetic number, because the mean of its divisors is an integer number (13641012).

Almost surely, 2^275640043 is an apocalyptic number.

275640043 is a deficient number, since it is larger than the sum of its proper divisors (51744245).

275640043 is a wasteful number, since it uses less digits than its factorization.

275640043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 275640043 is about 16602.4107586820. The cubic root of 275640043 is about 650.7998382587.

The spelling of 275640043 in words is "two hundred seventy-five million, six hundred forty thousand, forty-three".