45404431 has 4 divisors (see below), whose sum is σ = 46460392. Its totient is φ = 44348472.

The previous prime is 45404423. The next prime is 45404483. The reversal of 45404431 is 13440454.

45404431 is digitally balanced in base 2, because in such base 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 an emirpimes, since its reverse is a distinct semiprime: 13440454 = 2 ⋅6720227.

It is a cyclic number.

It is not a de Polignac number, because 45404431 - 2³ = 45404423 is a prime.

It is a super-2 number, since 2×45404431² = 4123124708867522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45404396 and 45404405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45404831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527916 + ... + 528001.

It is an arithmetic number, because the mean of its divisors is an integer number (11615098).

Almost surely, 2^45404431 is an apocalyptic number.

45404431 is a deficient number, since it is larger than the sum of its proper divisors (1055961).

45404431 is a wasteful number, since it uses less digits than its factorization.

45404431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055960.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 45404431 is about 6738.2810122464. The cubic root of 45404431 is about 356.7517229042.

Adding to 45404431 its reverse (13440454), we get a palindrome (58844885).

The spelling of 45404431 in words is "forty-five million, four hundred four thousand, four hundred thirty-one".