45205561001 has 4 divisors (see below), whose sum is σ = 45227202900. Its totient is φ = 45183919104.

The previous prime is 45205560949. The next prime is 45205561013. The reversal of 45205561001 is 10016550254.

It is a happy number.

45205561001 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.

It can be written as a sum of positive squares in 2 ways, for example, as 24180561001 + 21025000000 = 155501^2 + 145000^2 .

It is a cyclic number.

It is not a de Polignac number, because 45205561001 - 2²² = 45201366697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45205561081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10817816 + ... + 10821993.

It is an arithmetic number, because the mean of its divisors is an integer number (11306800725).

Almost surely, 2^45205561001 is an apocalyptic number.

It is an amenable number.

45205561001 is a deficient number, since it is larger than the sum of its proper divisors (21641899).

45205561001 is a wasteful number, since it uses less digits than its factorization.

45205561001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21641898.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 45205561001 in words is "forty-five billion, two hundred five million, five hundred sixty-one thousand, one".