145544643 has 12 divisors (see below), whose sum is σ = 215913568. Its totient is φ = 94407120.

The previous prime is 145544627. The next prime is 145544647. The reversal of 145544643 is 346445541.

145544643 is a `hidden beast` number, since 1 + 4 + 5 + 5 + 4 + 4 + 643 = 666.

145544643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145544643 - 2⁴ = 145544627 is a prime.

It is a super-3 number, since 3×145544643³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145544598 and 145544607.

It is not an unprimeable number, because it can be changed into a prime (145544647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218203 + ... + 218868.

Almost surely, 2^145544643 is an apocalyptic number.

145544643 is a deficient number, since it is larger than the sum of its proper divisors (70368925).

145544643 is a wasteful number, since it uses less digits than its factorization.

145544643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437114 (or 437111 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 145544643 is about 12064.1884517774. The cubic root of 145544643 is about 526.0157423713.

The spelling of 145544643 in words is "one hundred forty-five million, five hundred forty-four thousand, six hundred forty-three".