2550155 has 4 divisors (see below), whose sum is σ = 3060192. Its totient is φ = 2040120.

The previous prime is 2550139. The next prime is 2550167. The reversal of 2550155 is 5510552.

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

It is not a de Polignac number, because 2550155 - 2⁴ = 2550139 is a prime.

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 2550155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255011 + ... + 255020.

It is an arithmetic number, because the mean of its divisors is an integer number (765048).

2^2550155 is an apocalyptic number.

2550155 is a deficient number, since it is larger than the sum of its proper divisors (510037).

2550155 is an equidigital number, since it uses as much as digits as its factorization.

2550155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510036.

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 2550155 is about 1596.9204739122. The cubic root of 2550155 is about 136.6224888606.

The spelling of 2550155 in words is "two million, five hundred fifty thousand, one hundred fifty-five".