43874545 has 16 divisors (see below), whose sum is σ = 61854912. Its totient is φ = 29453760.

The previous prime is 43874539. The next prime is 43874617. The reversal of 43874545 is 54547834.

It is not a de Polignac number, because 43874545 - 2¹³ = 43866353 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43874498 and 43874507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29967 + ... + 31396.

It is an arithmetic number, because the mean of its divisors is an integer number (3865932).

Almost surely, 2^43874545 is an apocalyptic number.

It is an amenable number.

43874545 is a deficient number, since it is larger than the sum of its proper divisors (17980367).

43874545 is a wasteful number, since it uses less digits than its factorization.

43874545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61392.

The product of its digits is 268800, while the sum is 40.

The square root of 43874545 is about 6623.7863039201. The cubic root of 43874545 is about 352.6989839433.

Subtracting 43874545 from its reverse (54547834), we obtain a square (10673289 = 3267²).

The spelling of 43874545 in words is "forty-three million, eight hundred seventy-four thousand, five hundred forty-five".