2591506 has 8 divisors (see below), whose sum is σ = 3911040. Its totient is φ = 1287828.

The previous prime is 2591471. The next prime is 2591513. The reversal of 2591506 is 6051952.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3546 + ... + 4213.

It is an arithmetic number, because the mean of its divisors is an integer number (488880).

2^2591506 is an apocalyptic number.

2591506 is a deficient number, since it is larger than the sum of its proper divisors (1319534).

2591506 is a wasteful number, since it uses less digits than its factorization.

2591506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7928.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 2591506 is about 1609.8155173808. The cubic root of 2591506 is about 137.3569818724.

The spelling of 2591506 in words is "two million, five hundred ninety-one thousand, five hundred six".