45215643 has 12 divisors (see below), whose sum is σ = 66266984. Its totient is φ = 27403200.

The previous prime is 45215641. The next prime is 45215659. The reversal of 45215643 is 34651254.

It is not a de Polignac number, because 45215643 - 2¹ = 45215641 is a prime.

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 45215643.

It is not an unprimeable number, because it can be changed into a prime (45215641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61918 + ... + 62643.

Almost surely, 2^45215643 is an apocalyptic number.

45215643 is a deficient number, since it is larger than the sum of its proper divisors (21051341).

45215643 is a wasteful number, since it uses less digits than its factorization.

45215643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124586 (or 124575 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 45215643 is about 6724.2578029103. The cubic root of 45215643 is about 356.2565876283.

Adding to 45215643 its reverse (34651254), we get a palindrome (79866897).

The spelling of 45215643 in words is "forty-five million, two hundred fifteen thousand, six hundred forty-three".