45550001 has 4 divisors (see below), whose sum is σ = 52057152. Its totient is φ = 39042852.

The previous prime is 45549983. The next prime is 45550009. The reversal of 45550001 is 10005554.

45550001 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45550001 is a prime.

It is a super-2 number, since 2×45550001² = 4149605182200002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45550009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3253565 + ... + 3253578.

It is an arithmetic number, because the mean of its divisors is an integer number (13014288).

Almost surely, 2^45550001 is an apocalyptic number.

It is an amenable number.

45550001 is a deficient number, since it is larger than the sum of its proper divisors (6507151).

45550001 is an equidigital number, since it uses as much as digits as its factorization.

45550001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6507150.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 45550001 is about 6749.0740846430. The cubic root of 45550001 is about 357.1325737458.

Adding to 45550001 its reverse (10005554), we get a palindrome (55555555).

The spelling of 45550001 in words is "forty-five million, five hundred fifty thousand, one".