2503281 has 16 divisors (see below), whose sum is σ = 3760128. Its totient is φ = 1467600.

The previous prime is 2503261. The next prime is 2503283. The reversal of 2503281 is 1823052.

It is not a de Polignac number, because 2503281 - 2⁶ = 2503217 is a prime.

It is a super-2 number, since 2×2503281² = 12532831529922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2503283) 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, 201 + ... + 2246.

It is an arithmetic number, because the mean of its divisors is an integer number (235008).

2^2503281 is an apocalyptic number.

It is an amenable number.

2503281 is a deficient number, since it is larger than the sum of its proper divisors (1256847).

2503281 is a wasteful number, since it uses less digits than its factorization.

2503281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2503281 is about 1582.1760331897. The cubic root of 2503281 is about 135.7802282361.

The spelling of 2503281 in words is "two million, five hundred three thousand, two hundred eighty-one".