137447845 has 8 divisors (see below), whose sum is σ = 165793176. Its totient is φ = 109387776.

The previous prime is 137447837. The next prime is 137447857. The reversal of 137447845 is 548744731.

It can be written as a sum of positive squares in 4 ways, for example, as 15610401 + 121837444 = 3951^2 + 11038^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137447845 - 2³ = 137447837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70252 + ... + 72181.

It is an arithmetic number, because the mean of its divisors is an integer number (20724147).

Almost surely, 2^137447845 is an apocalyptic number.

It is an amenable number.

137447845 is a deficient number, since it is larger than the sum of its proper divisors (28345331).

137447845 is a wasteful number, since it uses less digits than its factorization.

137447845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142631.

The product of its digits is 376320, while the sum is 43.

The square root of 137447845 is about 11723.8152919602. The cubic root of 137447845 is about 516.0747906033.

The spelling of 137447845 in words is "one hundred thirty-seven million, four hundred forty-seven thousand, eight hundred forty-five".