145555244 has 6 divisors (see below), whose sum is σ = 254721684. Its totient is φ = 72777620.

The previous prime is 145555243. The next prime is 145555271. The reversal of 145555244 is 442555541.

It is not an unprimeable number, because it can be changed into a prime (145555243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18194402 + ... + 18194409.

It is an arithmetic number, because the mean of its divisors is an integer number (42453614).

Almost surely, 2^145555244 is an apocalyptic number.

It is an amenable number.

145555244 is a deficient number, since it is larger than the sum of its proper divisors (109166440).

145555244 is a wasteful number, since it uses less digits than its factorization.

145555244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36388815 (or 36388813 counting only the distinct ones).

The product of its digits is 80000, while the sum is 35.

The square root of 145555244 is about 12064.6278019672. The cubic root of 145555244 is about 526.0285131551.

The spelling of 145555244 in words is "one hundred forty-five million, five hundred fifty-five thousand, two hundred forty-four".