4591651 has 4 divisors (see below), whose sum is σ = 4791312. Its totient is φ = 4391992.

The previous prime is 4591633. The next prime is 4591661. The reversal of 4591651 is 1561954.

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 4591651 - 2⁵ = 4591619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4591621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99796 + ... + 99841.

It is an arithmetic number, because the mean of its divisors is an integer number (1197828).

Almost surely, 2^4591651 is an apocalyptic number.

4591651 is a deficient number, since it is larger than the sum of its proper divisors (199661).

4591651 is a wasteful number, since it uses less digits than its factorization.

4591651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199660.

The product of its digits is 5400, while the sum is 31.

The square root of 4591651 is about 2142.8138043237. The cubic root of 4591651 is about 166.2096711872.

The spelling of 4591651 in words is "four million, five hundred ninety-one thousand, six hundred fifty-one".