137885247 has 28 divisors (see below), whose sum is σ = 209646144. Its totient is φ = 90629280.

The previous prime is 137885239. The next prime is 137885269. The reversal of 137885247 is 742588731.

It is not a de Polignac number, because 137885247 - 2³ = 137885239 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137885287) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 51922 + ... + 54512.

Almost surely, 2^137885247 is an apocalyptic number.

137885247 is a deficient number, since it is larger than the sum of its proper divisors (71760897).

137885247 is an frugal number, since it uses more digits than its factorization.

137885247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682 (or 2667 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 137885247 is about 11742.4548966560. The cubic root of 137885247 is about 516.6216480141.

The spelling of 137885247 in words is "one hundred thirty-seven million, eight hundred eighty-five thousand, two hundred forty-seven".