4345445554 has 4 divisors (see below), whose sum is σ = 6518168334. Its totient is φ = 2172722776.

The previous prime is 4345445551. The next prime is 4345445561. The reversal of 4345445554 is 4555445434.

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

It can be written as a sum of positive squares in only one way, i.e., 3567314529 + 778131025 = 59727^2 + 27895^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4345445554.

It is not an unprimeable number, because it can be changed into a prime (4345445551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086361387 + ... + 1086361390.

Almost surely, 2^4345445554 is an apocalyptic number.

4345445554 is a deficient number, since it is larger than the sum of its proper divisors (2172722780).

4345445554 is a wasteful number, since it uses less digits than its factorization.

4345445554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172722779.

The product of its digits is 1920000, while the sum is 43.

The square root of 4345445554 is about 65919.9935831308. The cubic root of 4345445554 is about 1631.8419908316.

The spelling of 4345445554 in words is "four billion, three hundred forty-five million, four hundred forty-five thousand, five hundred fifty-four".