145297643 has 2 divisors, whose sum is σ = 145297644. Its totient is φ = 145297642.

The previous prime is 145297637. The next prime is 145297681. The reversal of 145297643 is 346792541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145297643 - 2¹⁶ = 145232107 is a prime.

It is a super-2 number, since 2×145297643² = 42222810122710898, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145297643.

It is not a weakly prime, because it can be changed into another prime (145297843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72648821 + 72648822.

It is an arithmetic number, because the mean of its divisors is an integer number (72648822).

Almost surely, 2^145297643 is an apocalyptic number.

145297643 is a deficient number, since it is larger than the sum of its proper divisors (1).

145297643 is an equidigital number, since it uses as much as digits as its factorization.

145297643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

The square root of 145297643 is about 12053.9471958359. The cubic root of 145297643 is about 525.7180113727.

The spelling of 145297643 in words is "one hundred forty-five million, two hundred ninety-seven thousand, six hundred forty-three".