255161851 has 4 divisors (see below), whose sum is σ = 291613552. Its totient is φ = 218710152.

The previous prime is 255161813. The next prime is 255161861. The reversal of 255161851 is 158161552.

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

It is a cyclic number.

It is not a de Polignac number, because 255161851 - 2¹¹ = 255159803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255161861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18225840 + ... + 18225853.

It is an arithmetic number, because the mean of its divisors is an integer number (72903388).

Almost surely, 2^255161851 is an apocalyptic number.

255161851 is a deficient number, since it is larger than the sum of its proper divisors (36451701).

255161851 is an equidigital number, since it uses as much as digits as its factorization.

255161851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36451700.

The product of its digits is 12000, while the sum is 34.

The square root of 255161851 is about 15973.7863701754. The cubic root of 255161851 is about 634.2667055501.

The spelling of 255161851 in words is "two hundred fifty-five million, one hundred sixty-one thousand, eight hundred fifty-one".