137475009 has 64 divisors (see below), whose sum is σ = 242081280. Its totient is φ = 75479040.

The previous prime is 137474989. The next prime is 137475011. The reversal of 137475009 is 900574731.

It is a happy number.

It is not a de Polignac number, because 137475009 - 2⁵ = 137474977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137474009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 875559 + ... + 875715.

It is an arithmetic number, because the mean of its divisors is an integer number (3782520).

Almost surely, 2^137475009 is an apocalyptic number.

It is an amenable number.

137475009 is a deficient number, since it is larger than the sum of its proper divisors (104606271).

137475009 is a wasteful number, since it uses less digits than its factorization.

137475009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 137475009 is about 11724.9737313139. The cubic root of 137475009 is about 516.1087858791.

The spelling of 137475009 in words is "one hundred thirty-seven million, four hundred seventy-five thousand, nine".