2501155 has 4 divisors (see below), whose sum is σ = 3001392. Its totient is φ = 2000920.

The previous prime is 2501143. The next prime is 2501171. The reversal of 2501155 is 5511052.

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

It is a de Polignac number, because none of the positive numbers 2^k-2501155 is a prime.

It is a Duffinian number.

2501155 is a lucky number.

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, 250111 + ... + 250120.

It is an arithmetic number, because the mean of its divisors is an integer number (750348).

2^2501155 is an apocalyptic number.

2501155 is a deficient number, since it is larger than the sum of its proper divisors (500237).

2501155 is an equidigital number, since it uses as much as digits as its factorization.

2501155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500236.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 2501155 is about 1581.5040309781. The cubic root of 2501155 is about 135.7417786275.

The spelling of 2501155 in words is "two million, five hundred one thousand, one hundred fifty-five".