2503155 has 16 divisors (see below), whose sum is σ = 4216320. Its totient is φ = 1264608.

The previous prime is 2503153. The next prime is 2503181. The reversal of 2503155 is 5513052.

It is not a de Polignac number, because 2503155 - 2¹ = 2503153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2503153) 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, 4107 + ... + 4676.

It is an arithmetic number, because the mean of its divisors is an integer number (263520).

2^2503155 is an apocalyptic number.

2503155 is a deficient number, since it is larger than the sum of its proper divisors (1713165).

2503155 is a wasteful number, since it uses less digits than its factorization.

2503155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8810.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 2503155 is about 1582.1362141105. The cubic root of 2503155 is about 135.7779500799. Note that the first 3 decimals are identical.

The spelling of 2503155 in words is "two million, five hundred three thousand, one hundred fifty-five".