45123641 has 4 divisors (see below), whose sum is σ = 46173072. Its totient is φ = 44074212.

The previous prime is 45123599. The next prime is 45123643. The reversal of 45123641 is 14632154.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14632154 = 2 ⋅7316077.

It is a cyclic number.

It is not a de Polignac number, because 45123641 - 2¹⁰ = 45122617 is a prime.

It is a super-2 number, since 2×45123641² = 4072285954193762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45123641.

It is not an unprimeable number, because it can be changed into a prime (45123643) 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, 524651 + ... + 524736.

It is an arithmetic number, because the mean of its divisors is an integer number (11543268).

Almost surely, 2^45123641 is an apocalyptic number.

It is an amenable number.

45123641 is a deficient number, since it is larger than the sum of its proper divisors (1049431).

45123641 is a wasteful number, since it uses less digits than its factorization.

45123641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049430.

The product of its digits is 2880, while the sum is 26.

The square root of 45123641 is about 6717.4132670247. The cubic root of 45123641 is about 356.0147939187.

Adding to 45123641 its reverse (14632154), we get a palindrome (59755795).

The spelling of 45123641 in words is "forty-five million, one hundred twenty-three thousand, six hundred forty-one".