145663556 has 12 divisors (see below), whose sum is σ = 255076668. Its totient is φ = 72784512.

The previous prime is 145663523. The next prime is 145663571. The reversal of 145663556 is 655366541.

It can be written as a sum of positive squares in 2 ways, for example, as 57002500 + 88661056 = 7550^2 + 9416^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4361 + ... + 17616.

It is an arithmetic number, because the mean of its divisors is an integer number (21256389).

Almost surely, 2^145663556 is an apocalyptic number.

It is an amenable number.

145663556 is a deficient number, since it is larger than the sum of its proper divisors (109413112).

145663556 is a wasteful number, since it uses less digits than its factorization.

145663556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23638 (or 23636 counting only the distinct ones).

The product of its digits is 324000, while the sum is 41.

The square root of 145663556 is about 12069.1157919708. The cubic root of 145663556 is about 526.1589586415.

The spelling of 145663556 in words is "one hundred forty-five million, six hundred sixty-three thousand, five hundred fifty-six".