2045505454 has 4 divisors (see below), whose sum is σ = 3068258184. Its totient is φ = 1022752726.

The previous prime is 2045505431. The next prime is 2045505461. The reversal of 2045505454 is 4545055402.

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

It is a super-2 number, since 2×2045505454² = 8368185124687492232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511376362 + ... + 511376365.

It is an arithmetic number, because the mean of its divisors is an integer number (767064546).

Almost surely, 2^2045505454 is an apocalyptic number.

2045505454 is a deficient number, since it is larger than the sum of its proper divisors (1022752730).

2045505454 is a wasteful number, since it uses less digits than its factorization.

2045505454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022752729.

The product of its (nonzero) digits is 80000, while the sum is 34.

The square root of 2045505454 is about 45227.2644983090. The cubic root of 2045505454 is about 1269.4050272799.

The spelling of 2045505454 in words is "two billion, forty-five million, five hundred five thousand, four hundred fifty-four".