5625991 has 8 divisors (see below), whose sum is σ = 6579584. Its totient is φ = 4709880.

The previous prime is 5625967. The next prime is 5626001. The reversal of 5625991 is 1995265.

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

It is not a de Polignac number, because 5625991 - 2⁷ = 5625863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5625991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5625941) 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, 9045 + ... + 9646.

It is an arithmetic number, because the mean of its divisors is an integer number (822448).

Almost surely, 2^5625991 is an apocalyptic number.

5625991 is a deficient number, since it is larger than the sum of its proper divisors (953593).

5625991 is a wasteful number, since it uses less digits than its factorization.

5625991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18741.

The product of its digits is 24300, while the sum is 37.

The square root of 5625991 is about 2371.9171570694. The cubic root of 5625991 is about 177.8551087039.

The spelling of 5625991 in words is "five million, six hundred twenty-five thousand, nine hundred ninety-one".