156135145 has 4 divisors (see below), whose sum is σ = 187362180. Its totient is φ = 124908112.

The previous prime is 156135139. The next prime is 156135167. The reversal of 156135145 is 541531651.

It is a happy number.

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 75620416 + 80514729 = 8696^2 + 8973^2 .

It is a cyclic number.

It is not a de Polignac number, because 156135145 - 2³ = 156135137 is a prime.

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, 15613510 + ... + 15613519.

It is an arithmetic number, because the mean of its divisors is an integer number (46840545).

Almost surely, 2^156135145 is an apocalyptic number.

It is an amenable number.

156135145 is a deficient number, since it is larger than the sum of its proper divisors (31227035).

156135145 is an equidigital number, since it uses as much as digits as its factorization.

156135145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31227034.

The product of its digits is 9000, while the sum is 31.

The square root of 156135145 is about 12495.4049554226. The cubic root of 156135145 is about 538.4766681071.

Adding to 156135145 its reverse (541531651), we get a palindrome (697666796).

The spelling of 156135145 in words is "one hundred fifty-six million, one hundred thirty-five thousand, one hundred forty-five".