2145555303 has 4 divisors (see below), whose sum is σ = 2860740408. Its totient is φ = 1430370200.

The previous prime is 2145555277. The next prime is 2145555317. The reversal of 2145555303 is 3035555412.

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 2145555303 - 2¹² = 2145551207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145555323) 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, 357592548 + ... + 357592553.

It is an arithmetic number, because the mean of its divisors is an integer number (715185102).

Almost surely, 2^2145555303 is an apocalyptic number.

2145555303 is a deficient number, since it is larger than the sum of its proper divisors (715185105).

2145555303 is an equidigital number, since it uses as much as digits as its factorization.

2145555303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715185104.

The product of its (nonzero) digits is 45000, while the sum is 33.

The square root of 2145555303 is about 46320.1392808787. The cubic root of 2145555303 is about 1289.7728708947.

The spelling of 2145555303 in words is "two billion, one hundred forty-five million, five hundred fifty-five thousand, three hundred three".