45218901 has 32 divisors (see below), whose sum is σ = 75255040. Its totient is φ = 23514624.

The previous prime is 45218819. The next prime is 45218909. The reversal of 45218901 is 10981254.

It is a happy number.

It is not a de Polignac number, because 45218901 - 2⁹ = 45218389 is a prime.

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

It is the 6725-th Hogben number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45218909) by changing a digit.

It is a nontrivial repunit in base 6724.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18795 + ... + 21063.

It is an arithmetic number, because the mean of its divisors is an integer number (2351720).

Almost surely, 2^45218901 is an apocalyptic number.

It is an amenable number.

45218901 is a deficient number, since it is larger than the sum of its proper divisors (30036139).

45218901 is a wasteful number, since it uses less digits than its factorization.

45218901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 45218901 is about 6724.5000557662. The cubic root of 45218901 is about 356.2651440777.

The spelling of 45218901 in words is "forty-five million, two hundred eighteen thousand, nine hundred one".