2531065 has 4 divisors (see below), whose sum is σ = 3037284. Its totient is φ = 2024848.

The previous prime is 2531027. The next prime is 2531069. The reversal of 2531065 is 5601352.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 331776 + 2199289 = 576^2 + 1483^2 .

It is a cyclic number.

It is not a de Polignac number, because 2531065 - 2¹⁷ = 2399993 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2531069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253102 + ... + 253111.

It is an arithmetic number, because the mean of its divisors is an integer number (759321).

2^2531065 is an apocalyptic number.

It is an amenable number.

2531065 is a deficient number, since it is larger than the sum of its proper divisors (506219).

2531065 is an equidigital number, since it uses as much as digits as its factorization.

2531065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506218.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 2531065 is about 1590.9321167165. The cubic root of 2531065 is about 136.2807242106.

The spelling of 2531065 in words is "two million, five hundred thirty-one thousand, sixty-five".