2145253459 has 2 divisors, whose sum is σ = 2145253460. Its totient is φ = 2145253458.

The previous prime is 2145253423. The next prime is 2145253489. The reversal of 2145253459 is 9543525412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2145253459 - 2⁹ = 2145252947 is a prime.

It is a super-2 number, since 2×2145253459² = 9204224806702929362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2145253489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072626729 + 1072626730.

It is an arithmetic number, because the mean of its divisors is an integer number (1072626730).

Almost surely, 2^2145253459 is an apocalyptic number.

2145253459 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145253459 is an equidigital number, since it uses as much as digits as its factorization.

2145253459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 40.

The square root of 2145253459 is about 46316.8809290954. The cubic root of 2145253459 is about 1289.7123848502.

The spelling of 2145253459 in words is "two billion, one hundred forty-five million, two hundred fifty-three thousand, four hundred fifty-nine".