145357506 has 48 divisors (see below), whose sum is σ = 360607104. Its totient is φ = 41452992.

The previous prime is 145357489. The next prime is 145357567. The reversal of 145357506 is 605753541.

145357506 is a `hidden beast` number, since 145 + 3 + 5 + 7 + 506 = 666.

145357506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145357506² = 42257609101080072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121246 + ... + 122438.

It is an arithmetic number, because the mean of its divisors is an integer number (7512648).

Almost surely, 2^145357506 is an apocalyptic number.

145357506 is an abundant number, since it is smaller than the sum of its proper divisors (215249598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145357506 is a wasteful number, since it uses less digits than its factorization.

145357506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175 (or 2172 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 145357506 is about 12056.4300686397. The cubic root of 145357506 is about 525.7902005140.

The spelling of 145357506 in words is "one hundred forty-five million, three hundred fifty-seven thousand, five hundred six".