145022643 has 24 divisors (see below), whose sum is σ = 218400000. Its totient is φ = 96163848.

The previous prime is 145022599. The next prime is 145022653. The reversal of 145022643 is 346220541.

145022643 is a `hidden beast` number, since 14 + 5 + 0 + 2 + 2 + 643 = 666.

It is not a de Polignac number, because 145022643 - 2⁸ = 145022387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (145022653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46858 + ... + 49856.

It is an arithmetic number, because the mean of its divisors is an integer number (9100000).

Almost surely, 2^145022643 is an apocalyptic number.

145022643 is a deficient number, since it is larger than the sum of its proper divisors (73377357).

145022643 is an equidigital number, since it uses as much as digits as its factorization.

145022643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213 (or 3201 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 145022643 is about 12042.5347414903. The cubic root of 145022643 is about 525.3861322605.

The spelling of 145022643 in words is "one hundred forty-five million, twenty-two thousand, six hundred forty-three".