2506155 has 8 divisors (see below), whose sum is σ = 4009872. Its totient is φ = 1336608.

The previous prime is 2506129. The next prime is 2506183. The reversal of 2506155 is 5516052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2506155 - 2¹⁹ = 1981867 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83524 + ... + 83553.

It is an arithmetic number, because the mean of its divisors is an integer number (501234).

2^2506155 is an apocalyptic number.

2506155 is a deficient number, since it is larger than the sum of its proper divisors (1503717).

2506155 is a wasteful number, since it uses less digits than its factorization.

2506155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167085.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 2506155 is about 1583.0840154584. The cubic root of 2506155 is about 135.8321711503.

The spelling of 2506155 in words is "two million, five hundred six thousand, one hundred fifty-five".