45135823 has 4 divisors (see below), whose sum is σ = 45809560. Its totient is φ = 44462088.

The previous prime is 45135817. The next prime is 45135829. The reversal of 45135823 is 32853154.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (45135817) and next prime (45135829).

It is a cyclic number.

It is not a de Polignac number, because 45135823 - 2¹³ = 45127631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45135829) 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, 336768 + ... + 336901.

It is an arithmetic number, because the mean of its divisors is an integer number (11452390).

Almost surely, 2^45135823 is an apocalyptic number.

45135823 is a deficient number, since it is larger than the sum of its proper divisors (673737).

45135823 is an equidigital number, since it uses as much as digits as its factorization.

45135823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673736.

The product of its digits is 14400, while the sum is 31.

The square root of 45135823 is about 6718.3199536789. The cubic root of 45135823 is about 356.0468287302.

Adding to 45135823 its reverse (32853154), we get a palindrome (77988977).

The spelling of 45135823 in words is "forty-five million, one hundred thirty-five thousand, eight hundred twenty-three".