255161623 has 4 divisors (see below), whose sum is σ = 255213288. Its totient is φ = 255109960.

The previous prime is 255161617. The next prime is 255161629. The reversal of 255161623 is 326161552.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (255161617) and next prime (255161629).

It is a cyclic number.

It is not a de Polignac number, because 255161623 - 2¹⁷ = 255030551 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255161629) 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 3 ways as a sum of consecutive naturals, for example, 17536 + ... + 28597.

It is an arithmetic number, because the mean of its divisors is an integer number (63803322).

Almost surely, 2^255161623 is an apocalyptic number.

255161623 is a deficient number, since it is larger than the sum of its proper divisors (51665).

255161623 is an equidigital number, since it uses as much as digits as its factorization.

255161623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51664.

The product of its digits is 10800, while the sum is 31.

The square root of 255161623 is about 15973.7792334813. The cubic root of 255161623 is about 634.2665166336.

The spelling of 255161623 in words is "two hundred fifty-five million, one hundred sixty-one thousand, six hundred twenty-three".