255554091 has 12 divisors (see below), whose sum is σ = 397528768. Its totient is φ = 157263984.

The previous prime is 255554077. The next prime is 255554137. The reversal of 255554091 is 190455552.

255554091 is a `hidden beast` number, since 25 + 5 + 5 + 540 + 91 = 666.

It is not a de Polignac number, because 255554091 - 2⁵ = 255554059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255554011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1091995 + ... + 1092228.

Almost surely, 2^255554091 is an apocalyptic number.

255554091 is a deficient number, since it is larger than the sum of its proper divisors (141974677).

255554091 is a wasteful number, since it uses less digits than its factorization.

255554091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184242 (or 2184239 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 255554091 is about 15986.0592705019. The cubic root of 255554091 is about 634.5915417294.

It can be divided in two parts, 25555 and 4091, that added together give a triangular number (29646 = T₂₄₃).

The spelling of 255554091 in words is "two hundred fifty-five million, five hundred fifty-four thousand, ninety-one".