137304745 has 8 divisors (see below), whose sum is σ = 165362184. Its totient is φ = 109446144.

The previous prime is 137304721. The next prime is 137304757. The reversal of 137304745 is 547403731.

It can be written as a sum of positive squares in 4 ways, for example, as 2999824 + 134304921 = 1732^2 + 11589^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137304745 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137304745.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48184 + ... + 50953.

It is an arithmetic number, because the mean of its divisors is an integer number (20670273).

Almost surely, 2^137304745 is an apocalyptic number.

It is an amenable number.

137304745 is a deficient number, since it is larger than the sum of its proper divisors (28057439).

137304745 is an equidigital number, since it uses as much as digits as its factorization.

137304745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99419.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 137304745 is about 11717.7107405841. The cubic root of 137304745 is about 515.8956294424.

The spelling of 137304745 in words is "one hundred thirty-seven million, three hundred four thousand, seven hundred forty-five".