2145251353 has 16 divisors (see below), whose sum is σ = 2473136640. Its totient is φ = 1822761216.

The previous prime is 2145251351. The next prime is 2145251363. The reversal of 2145251353 is 3531525412.

It is a cyclic number.

It is not a de Polignac number, because 2145251353 - 2¹ = 2145251351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145251351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 995325 + ... + 997477.

It is an arithmetic number, because the mean of its divisors is an integer number (154571040).

Almost surely, 2^2145251353 is an apocalyptic number.

It is an amenable number.

2145251353 is a deficient number, since it is larger than the sum of its proper divisors (327885287).

2145251353 is a wasteful number, since it uses less digits than its factorization.

2145251353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336.

The product of its digits is 18000, while the sum is 31.

The square root of 2145251353 is about 46316.8581943983. The cubic root of 2145251353 is about 1289.7119628123.

Adding to 2145251353 its reverse (3531525412), we get a palindrome (5676776765).

The spelling of 2145251353 in words is "two billion, one hundred forty-five million, two hundred fifty-one thousand, three hundred fifty-three".