45651 has 4 divisors (see below), whose sum is σ = 60872. Its totient is φ = 30432.

The previous prime is 45641. The next prime is 45659. The reversal of 45651 is 15654.

It is a happy number.

45651 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.

It is not a de Polignac number, because 45651 - 2⁶ = 45587 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 (45659) 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, 7606 + ... + 7611.

It is an arithmetic number, because the mean of its divisors is an integer number (15218).

2⁴⁵⁶⁵¹ is an apocalyptic number.

45651 is a deficient number, since it is larger than the sum of its proper divisors (15221).

45651 is a wasteful number, since it uses less digits than its factorization.

45651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15220.

The product of its digits is 600, while the sum is 21.

The square root of 45651 is about 213.6609463613. The cubic root of 45651 is about 35.7396338145.

It can be divided in two parts, 45 and 651, that added together give a palindrome (696).

The spelling of 45651 in words is "forty-five thousand, six hundred fifty-one".