4545455 has 4 divisors (see below), whose sum is σ = 5454552. Its totient is φ = 3636360.

The previous prime is 4545451. The next prime is 4545461. The reversal of 4545455 is 5545454.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4545455 - 2² = 4545451 is a prime.

It is a super-2 number, since 2×4545455² = 41322322314050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4545451) 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, 454541 + ... + 454550.

It is an arithmetic number, because the mean of its divisors is an integer number (1363638).

Almost surely, 2^4545455 is an apocalyptic number.

4545455 is a deficient number, since it is larger than the sum of its proper divisors (909097).

4545455 is an equidigital number, since it uses as much as digits as its factorization.

4545455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909096.

The product of its digits is 40000, while the sum is 32.

The square root of 4545455 is about 2132.0072701565. The cubic root of 4545455 is about 165.6503867577.

Subtracting 4545455 from its reverse (5545454), we obtain a palindrome (999999).

The spelling of 4545455 in words is "four million, five hundred forty-five thousand, four hundred fifty-five".