255290491 has 8 divisors (see below), whose sum is σ = 263955600. Its totient is φ = 246718368.

The previous prime is 255290473. The next prime is 255290507. The reversal of 255290491 is 194092552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 255290491 - 2⁵ = 255290459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255290491.

It is not an unprimeable number, because it can be changed into a prime (255290471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17641 + ... + 28666.

It is an arithmetic number, because the mean of its divisors is an integer number (32994450).

Almost surely, 2^255290491 is an apocalyptic number.

255290491 is the 8541-st centered heptagonal number.

255290491 is a deficient number, since it is larger than the sum of its proper divisors (8665109).

255290491 is a wasteful number, since it uses less digits than its factorization.

255290491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46493.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 255290491 is about 15977.8124597831. The cubic root of 255290491 is about 634.3732762893.

The spelling of 255290491 in words is "two hundred fifty-five million, two hundred ninety thousand, four hundred ninety-one".