145684556 has 6 divisors (see below), whose sum is σ = 254947980. Its totient is φ = 72842276.

The previous prime is 145684541. The next prime is 145684613. The reversal of 145684556 is 655486541.

145684556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18210566 + ... + 18210573.

It is an arithmetic number, because the mean of its divisors is an integer number (42491330).

Almost surely, 2^145684556 is an apocalyptic number.

It is an amenable number.

145684556 is a deficient number, since it is larger than the sum of its proper divisors (109263424).

145684556 is a wasteful number, since it uses less digits than its factorization.

145684556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36421143 (or 36421141 counting only the distinct ones).

The product of its digits is 576000, while the sum is 44.

The square root of 145684556 is about 12069.9857497845. The cubic root of 145684556 is about 526.1842424931.

The spelling of 145684556 in words is "one hundred forty-five million, six hundred eighty-four thousand, five hundred fifty-six".