1295581 has 8 divisors (see below), whose sum is σ = 1506240. Its totient is φ = 1091328.

The previous prime is 1295563. The next prime is 1295603. The reversal of 1295581 is 1855921.

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

It is not a de Polignac number, because 1295581 - 2⁵ = 1295549 is a prime.

It is a super-2 number, since 2×1295581² = 3357060255122, which contains 22 as substring.

It is a Duffinian number.

1295581 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1295501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1156 + ... + 1981.

It is an arithmetic number, because the mean of its divisors is an integer number (188280).

2^1295581 is an apocalyptic number.

It is an amenable number.

1295581 is a deficient number, since it is larger than the sum of its proper divisors (210659).

1295581 is an equidigital number, since it uses as much as digits as its factorization.

1295581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203.

The product of its digits is 3600, while the sum is 31.

The square root of 1295581 is about 1138.2359157925. The cubic root of 1295581 is about 109.0154847120.

The spelling of 1295581 in words is "one million, two hundred ninety-five thousand, five hundred eighty-one".