4591551 has 4 divisors (see below), whose sum is σ = 6122072. Its totient is φ = 3061032.

The previous prime is 4591523. The next prime is 4591567. The reversal of 4591551 is 1551954.

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

It is not a de Polignac number, because 4591551 - 2⁵ = 4591519 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4591511) 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, 765256 + ... + 765261.

It is an arithmetic number, because the mean of its divisors is an integer number (1530518).

Almost surely, 2^4591551 is an apocalyptic number.

4591551 is a deficient number, since it is larger than the sum of its proper divisors (1530521).

4591551 is a wasteful number, since it uses less digits than its factorization.

4591551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530520.

The product of its digits is 4500, while the sum is 30.

The square root of 4591551 is about 2142.7904703914. The cubic root of 4591551 is about 166.2084645705.

The spelling of 4591551 in words is "four million, five hundred ninety-one thousand, five hundred fifty-one".