145305545 has 48 divisors (see below), whose sum is σ = 231735168. Its totient is φ = 84679680.

The previous prime is 145305539. The next prime is 145305581. The reversal of 145305545 is 545503541.

145305545 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 145305545 - 2¹⁴ = 145289161 is a prime.

It is a super-2 number, since 2×145305545² = 42227402815494050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 975131 + ... + 975279.

It is an arithmetic number, because the mean of its divisors is an integer number (4827816).

Almost surely, 2^145305545 is an apocalyptic number.

It is an amenable number.

145305545 is a deficient number, since it is larger than the sum of its proper divisors (86429623).

145305545 is a wasteful number, since it uses less digits than its factorization.

145305545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 145305545 is about 12054.2749678278. The cubic root of 145305545 is about 525.7275415764.

The spelling of 145305545 in words is "one hundred forty-five million, three hundred five thousand, five hundred forty-five".