45861 has 4 divisors (see below), whose sum is σ = 61152. Its totient is φ = 30572.

The previous prime is 45853. The next prime is 45863. The reversal of 45861 is 16854.

45861 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45861 - 2³ = 45853 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 (45863) 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, 7641 + ... + 7646.

It is an arithmetic number, because the mean of its divisors is an integer number (15288).

2⁴⁵⁸⁶¹ is an apocalyptic number.

It is an amenable number.

45861 is a deficient number, since it is larger than the sum of its proper divisors (15291).

45861 is a wasteful number, since it uses less digits than its factorization.

45861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15290.

The product of its digits is 960, while the sum is 24.

The square root of 45861 is about 214.1518153087. The cubic root of 45861 is about 35.7943521775.

The spelling of 45861 in words is "forty-five thousand, eight hundred sixty-one".