1099554455 has 4 divisors (see below), whose sum is σ = 1319465352. Its totient is φ = 879643560.

The previous prime is 1099554439. The next prime is 1099554473. The reversal of 1099554455 is 5544559901.

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

It is not a de Polignac number, because 1099554455 - 2⁴ = 1099554439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109955441 + ... + 109955450.

It is an arithmetic number, because the mean of its divisors is an integer number (329866338).

Almost surely, 2^1099554455 is an apocalyptic number.

1099554455 is a deficient number, since it is larger than the sum of its proper divisors (219910897).

1099554455 is an equidigital number, since it uses as much as digits as its factorization.

1099554455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219910896.

The product of its (nonzero) digits is 810000, while the sum is 47.

The square root of 1099554455 is about 33159.5303796661. The cubic root of 1099554455 is about 1032.1407247429.

The spelling of 1099554455 in words is "one billion, ninety-nine million, five hundred fifty-four thousand, four hundred fifty-five".