45555545 has 32 divisors (see below), whose sum is σ = 64627200. Its totient is φ = 30811200.

The previous prime is 45555509. The next prime is 45555553. The reversal of 45555545 is 54555554.

It is not a de Polignac number, because 45555545 - 2¹⁰ = 45554521 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 45555499 and 45555508.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173084 + ... + 173346.

It is an arithmetic number, because the mean of its divisors is an integer number (2019600).

Almost surely, 2^45555545 is an apocalyptic number.

It is an amenable number.

45555545 is a deficient number, since it is larger than the sum of its proper divisors (19071655).

45555545 is a wasteful number, since it uses less digits than its factorization.

45555545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 376 counting only the distinct ones).

The product of its digits is 250000, while the sum is 38.

The square root of 45555545 is about 6749.4847951529. The cubic root of 45555545 is about 357.1470623124.

Subtracting 45555545 from its reverse (54555554), we obtain a palindrome (9000009).

The spelling of 45555545 in words is "forty-five million, five hundred fifty-five thousand, five hundred forty-five".