5291591 has 4 divisors (see below), whose sum is σ = 5329800. Its totient is φ = 5253384.

The previous prime is 5291581. The next prime is 5291599. The reversal of 5291591 is 1951925.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5291591 is a prime.

It is a super-2 number, since 2×5291591² = 56001870622562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5291599) 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, 18896 + ... + 19173.

It is an arithmetic number, because the mean of its divisors is an integer number (1332450).

Almost surely, 2^5291591 is an apocalyptic number.

5291591 is a deficient number, since it is larger than the sum of its proper divisors (38209).

5291591 is a wasteful number, since it uses less digits than its factorization.

5291591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38208.

The product of its digits is 4050, while the sum is 32.

The square root of 5291591 is about 2300.3458435635. The cubic root of 5291591 is about 174.2590824858.

The spelling of 5291591 in words is "five million, two hundred ninety-one thousand, five hundred ninety-one".