254155551 has 16 divisors (see below), whose sum is σ = 367110240. Its totient is φ = 156399360.

The previous prime is 254155549. The next prime is 254155579. The reversal of 254155551 is 155551452.

It is not a de Polignac number, because 254155551 - 2¹ = 254155549 is a prime.

It is a super-2 number, since 2×254155551² = 129190088208227202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254155501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12690 + ... + 25871.

It is an arithmetic number, because the mean of its divisors is an integer number (22944390).

Almost surely, 2^254155551 is an apocalyptic number.

254155551 is a deficient number, since it is larger than the sum of its proper divisors (112954689).

254155551 is an equidigital number, since it uses as much as digits as its factorization.

254155551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38603 (or 38577 counting only the distinct ones).

The product of its digits is 25000, while the sum is 33.

The square root of 254155551 is about 15942.2567724899. The cubic root of 254155551 is about 633.4318060795.

The spelling of 254155551 in words is "two hundred fifty-four million, one hundred fifty-five thousand, five hundred fifty-one".