146505145 has 4 divisors (see below), whose sum is σ = 175806180. Its totient is φ = 117204112.

The previous prime is 146505137. The next prime is 146505179. The reversal of 146505145 is 541505641.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39237696 + 107267449 = 6264^2 + 10357^2 .

It is a cyclic number.

It is not a de Polignac number, because 146505145 - 2³ = 146505137 is a prime.

It is a super-2 number, since 2×146505145² = 42927515022942050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14650510 + ... + 14650519.

It is an arithmetic number, because the mean of its divisors is an integer number (43951545).

Almost surely, 2^146505145 is an apocalyptic number.

It is an amenable number.

146505145 is a deficient number, since it is larger than the sum of its proper divisors (29301035).

146505145 is an equidigital number, since it uses as much as digits as its factorization.

146505145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29301034.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 146505145 is about 12103.9309730352. The cubic root of 146505145 is about 527.1703292622.

The spelling of 146505145 in words is "one hundred forty-six million, five hundred five thousand, one hundred forty-five".