45545455 has 8 divisors (see below), whose sum is σ = 54762192. Its totient is φ = 36364608.

The previous prime is 45545453. The next prime is 45545459. The reversal of 45545455 is 55454554.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45545455 - 2¹ = 45545453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45545453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6094 + ... + 11323.

It is an arithmetic number, because the mean of its divisors is an integer number (6845274).

Almost surely, 2^45545455 is an apocalyptic number.

45545455 is a deficient number, since it is larger than the sum of its proper divisors (9216737).

45545455 is a wasteful number, since it uses less digits than its factorization.

45545455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17945.

The product of its digits is 200000, while the sum is 37.

The square root of 45545455 is about 6748.7372893009. The cubic root of 45545455 is about 357.1206924530.

Subtracting 45545455 from its reverse (55454554), we obtain a palindrome (9909099).

The spelling of 45545455 in words is "forty-five million, five hundred forty-five thousand, four hundred fifty-five".