275404993 has 2 divisors, whose sum is σ = 275404994. Its totient is φ = 275404992.

The previous prime is 275404973. The next prime is 275405003. The reversal of 275404993 is 399404572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 247653169 + 27751824 = 15737^2 + 5268^2 .

It is a cyclic number.

It is not a de Polignac number, because 275404993 - 2²¹ = 273307841 is a prime.

It is not a weakly prime, because it can be changed into another prime (275404903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137702496 + 137702497.

It is an arithmetic number, because the mean of its divisors is an integer number (137702497).

Almost surely, 2^275404993 is an apocalyptic number.

It is an amenable number.

275404993 is a deficient number, since it is larger than the sum of its proper divisors (1).

275404993 is an equidigital number, since it uses as much as digits as its factorization.

275404993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 275404993 is about 16595.3304576920. The cubic root of 275404993 is about 650.6147974081.

The spelling of 275404993 in words is "two hundred seventy-five million, four hundred four thousand, nine hundred ninety-three".