45555555 has 16 divisors (see below), whose sum is σ = 73221120. Its totient is φ = 24185568.

The previous prime is 45555553. The next prime is 45555581. The reversal of 45555555 is 55555554.

It is not a de Polignac number, because 45555555 - 2¹ = 45555553 is a prime.

45555555 is a modest number, since divided by 5555 gives 4555 as remainder.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (45555553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3465 + ... + 10154.

It is an arithmetic number, because the mean of its divisors is an integer number (4576320).

Almost surely, 2^45555555 is an apocalyptic number.

45555555 is a deficient number, since it is larger than the sum of its proper divisors (27665565).

45555555 is a wasteful number, since it uses less digits than its factorization.

45555555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13850.

The product of its digits is 312500, while the sum is 39.

The square root of 45555555 is about 6749.4855359501. The cubic root of 45555555 is about 357.1470884451.

Subtracting 45555555 from its reverse (55555554), we obtain a palindrome (9999999).

The spelling of 45555555 in words is "forty-five million, five hundred fifty-five thousand, five hundred fifty-five".