145572643 has 2 divisors, whose sum is σ = 145572644. Its totient is φ = 145572642.

The previous prime is 145572631. The next prime is 145572659. The reversal of 145572643 is 346275541.

It is a weak prime.

It is an emirp because it is prime and its reverse (346275541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145572643 is a prime.

It is not a weakly prime, because it can be changed into another prime (145572043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72786321 + 72786322.

It is an arithmetic number, because the mean of its divisors is an integer number (72786322).

Almost surely, 2^145572643 is an apocalyptic number.

145572643 is a deficient number, since it is larger than the sum of its proper divisors (1).

145572643 is an equidigital number, since it uses as much as digits as its factorization.

145572643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 37.

The square root of 145572643 is about 12065.3488552963. The cubic root of 145572643 is about 526.0494719910.

The spelling of 145572643 in words is "one hundred forty-five million, five hundred seventy-two thousand, six hundred forty-three".