45161823 has 32 divisors (see below), whose sum is σ = 71626752. Its totient is φ = 24768000.

The previous prime is 45161821. The next prime is 45161827. The reversal of 45161823 is 32816154.

It is not a de Polignac number, because 45161823 - 2¹ = 45161821 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45161821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112423 + ... + 112823.

It is an arithmetic number, because the mean of its divisors is an integer number (2238336).

Almost surely, 2^45161823 is an apocalyptic number.

45161823 is a deficient number, since it is larger than the sum of its proper divisors (26464929).

45161823 is a wasteful number, since it uses less digits than its factorization.

45161823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615.

The product of its digits is 5760, while the sum is 30.

The square root of 45161823 is about 6720.2546826739. The cubic root of 45161823 is about 356.1151812419.

Adding to 45161823 its reverse (32816154), we get a palindrome (77977977).

The spelling of 45161823 in words is "forty-five million, one hundred sixty-one thousand, eight hundred twenty-three".