12495591 has 12 divisors (see below), whose sum is σ = 18084768. Its totient is φ = 8313984.

The previous prime is 12495583. The next prime is 12495599. The reversal of 12495591 is 19559421.

It is an interprime number because it is at equal distance from previous prime (12495583) and next prime (12495599).

It is not a de Polignac number, because 12495591 - 2³ = 12495583 is a prime.

It is a super-2 number, since 2×12495591² = 312279588878562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12495599) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5026 + ... + 7088.

It is an arithmetic number, because the mean of its divisors is an integer number (1507064).

Almost surely, 2^12495591 is an apocalyptic number.

12495591 is a deficient number, since it is larger than the sum of its proper divisors (5589177).

12495591 is a wasteful number, since it uses less digits than its factorization.

12495591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742 (or 2739 counting only the distinct ones).

The product of its digits is 16200, while the sum is 36.

The square root of 12495591 is about 3534.9103241808. The cubic root of 12495591 is about 232.0521521183.

The spelling of 12495591 in words is "twelve million, four hundred ninety-five thousand, five hundred ninety-one".