2501281 has 2 divisors, whose sum is σ = 2501282. Its totient is φ = 2501280.

The previous prime is 2501269. The next prime is 2501299. The reversal of 2501281 is 1821052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2235025 + 266256 = 1495^2 + 516^2 .

It is a cyclic number.

It is not a de Polignac number, because 2501281 - 2⁵ = 2501249 is a prime.

It is a super-2 number, since 2×2501281² = 12512813281922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2501201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250640 + 1250641.

It is an arithmetic number, because the mean of its divisors is an integer number (1250641).

2^2501281 is an apocalyptic number.

It is an amenable number.

2501281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2501281 is an equidigital number, since it uses as much as digits as its factorization.

2501281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 2501281 is about 1581.5438659740. The cubic root of 2501281 is about 135.7440579980.

The spelling of 2501281 in words is "two million, five hundred one thousand, two hundred eighty-one".