4501861 has 16 divisors (see below), whose sum is σ = 5638528. Its totient is φ = 3499200.

The previous prime is 4501853. The next prime is 4501891. The reversal of 4501861 is 1681054.

It is a 7-Lehmer number, since φ(4501861) divides (4501861-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 4501861 - 2³ = 4501853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4501831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5146 + ... + 5956.

It is an arithmetic number, because the mean of its divisors is an integer number (352408).

Almost surely, 2^4501861 is an apocalyptic number.

It is an amenable number.

4501861 is a deficient number, since it is larger than the sum of its proper divisors (1136667).

4501861 is a wasteful number, since it uses less digits than its factorization.

4501861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 4501861 is about 2121.7589401249. The cubic root of 4501861 is about 165.1191181474.

The spelling of 4501861 in words is "four million, five hundred one thousand, eight hundred sixty-one".