2145332523 has 4 divisors (see below), whose sum is σ = 2860443368. Its totient is φ = 1430221680.

The previous prime is 2145332509. The next prime is 2145332537. The reversal of 2145332523 is 3252335412.

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

It is an interprime number because it is at equal distance from previous prime (2145332509) and next prime (2145332537).

It is not a de Polignac number, because 2145332523 - 2¹³ = 2145324331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145332543) 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, 357555418 + ... + 357555423.

It is an arithmetic number, because the mean of its divisors is an integer number (715110842).

Almost surely, 2^2145332523 is an apocalyptic number.

2145332523 is a deficient number, since it is larger than the sum of its proper divisors (715110845).

2145332523 is an equidigital number, since it uses as much as digits as its factorization.

2145332523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715110844.

The product of its digits is 21600, while the sum is 30.

The square root of 2145332523 is about 46317.7344329362. The cubic root of 2145332523 is about 1289.7282289093.

Adding to 2145332523 its reverse (3252335412), we get a palindrome (5397667935).

The spelling of 2145332523 in words is "two billion, one hundred forty-five million, three hundred thirty-two thousand, five hundred twenty-three".