137445473 has 6 divisors (see below), whose sum is σ = 151076562. Its totient is φ = 124950320.

The previous prime is 137445467. The next prime is 137445533. The reversal of 137445473 is 374544731.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 105103504 + 32341969 = 10252^2 + 5687^2 .

It is not a de Polignac number, because 137445473 - 2⁴ = 137445457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137445443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567836 + ... + 568077.

It is an arithmetic number, because the mean of its divisors is an integer number (25179427).

Almost surely, 2^137445473 is an apocalyptic number.

It is an amenable number.

137445473 is a deficient number, since it is larger than the sum of its proper divisors (13631089).

137445473 is a wasteful number, since it uses less digits than its factorization.

137445473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135935 (or 1135924 counting only the distinct ones).

The product of its digits is 141120, while the sum is 38.

The square root of 137445473 is about 11723.7141299163. The cubic root of 137445473 is about 516.0718218738.

The spelling of 137445473 in words is "one hundred thirty-seven million, four hundred forty-five thousand, four hundred seventy-three".