145533555 has 12 divisors (see below), whose sum is σ = 252258240. Its totient is φ = 77617872.

The previous prime is 145533547. The next prime is 145533587. The reversal of 145533555 is 555335541.

145533555 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 145533555 - 2³ = 145533547 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1616995 + ... + 1617084.

It is an arithmetic number, because the mean of its divisors is an integer number (21021520).

Almost surely, 2^145533555 is an apocalyptic number.

145533555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145533555 is a deficient number, since it is larger than the sum of its proper divisors (106724685).

145533555 is a wasteful number, since it uses less digits than its factorization.

145533555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3234090 (or 3234087 counting only the distinct ones).

The product of its digits is 112500, while the sum is 36.

The square root of 145533555 is about 12063.7289011317. The cubic root of 145533555 is about 526.0023842461.

The spelling of 145533555 in words is "one hundred forty-five million, five hundred thirty-three thousand, five hundred fifty-five".