2145255553 has 8 divisors (see below), whose sum is σ = 2580758720. Its totient is φ = 1742011920.

The previous prime is 2145255499. The next prime is 2145255569. The reversal of 2145255553 is 3555525412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2145255553 - 2¹³ = 2145247361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145255253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8064738 + ... + 8065003.

It is an arithmetic number, because the mean of its divisors is an integer number (322594840).

Almost surely, 2^2145255553 is an apocalyptic number.

It is an amenable number.

2145255553 is a deficient number, since it is larger than the sum of its proper divisors (435503167).

2145255553 is a wasteful number, since it uses less digits than its factorization.

2145255553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16129767.

The product of its digits is 150000, while the sum is 37.

The square root of 2145255553 is about 46316.9035342390. The cubic root of 2145255553 is about 1289.7128044831.

The spelling of 2145255553 in words is "two billion, one hundred forty-five million, two hundred fifty-five thousand, five hundred fifty-three".