4545591 has 4 divisors (see below), whose sum is σ = 6060792. Its totient is φ = 3030392.

The previous prime is 4545587. The next prime is 4545599. The reversal of 4545591 is 1955454.

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

It is a cyclic number.

It is not a de Polignac number, because 4545591 - 2² = 4545587 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4545599) 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, 757596 + ... + 757601.

It is an arithmetic number, because the mean of its divisors is an integer number (1515198).

Almost surely, 2^4545591 is an apocalyptic number.

4545591 is a deficient number, since it is larger than the sum of its proper divisors (1515201).

4545591 is a wasteful number, since it uses less digits than its factorization.

4545591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515200.

The product of its digits is 18000, while the sum is 33.

The square root of 4545591 is about 2132.0391647435. The cubic root of 4545591 is about 165.6520388275.

The spelling of 4545591 in words is "four million, five hundred forty-five thousand, five hundred ninety-one".