4455551 has 4 divisors (see below), whose sum is σ = 4539672. Its totient is φ = 4371432.

The previous prime is 4455533. The next prime is 4455559. The reversal of 4455551 is 1555544.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4455551 - 2⁶ = 4455487 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 (4455559) 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, 41981 + ... + 42086.

It is an arithmetic number, because the mean of its divisors is an integer number (1134918).

Almost surely, 2^4455551 is an apocalyptic number.

4455551 is a deficient number, since it is larger than the sum of its proper divisors (84121).

4455551 is an equidigital number, since it uses as much as digits as its factorization.

4455551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84120.

The product of its digits is 10000, while the sum is 29.

The square root of 4455551 is about 2110.8176141012. The cubic root of 4455551 is about 164.5509799710.

The spelling of 4455551 in words is "four million, four hundred fifty-five thousand, five hundred fifty-one".