137753906 has 4 divisors (see below), whose sum is σ = 206630862. Its totient is φ = 68876952.

The previous prime is 137753899. The next prime is 137753909. The reversal of 137753906 is 609357731.

137753906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 137710225 + 43681 = 11735^2 + 209^2 .

It is a super-2 number, since 2×137753906² = 37952277236513672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (137753909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34438475 + ... + 34438478.

Almost surely, 2^137753906 is an apocalyptic number.

137753906 is a deficient number, since it is larger than the sum of its proper divisors (68876956).

137753906 is an equidigital number, since it uses as much as digits as its factorization.

137753906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68876955.

The product of its (nonzero) digits is 119070, while the sum is 41.

The square root of 137753906 is about 11736.8609943204. The cubic root of 137753906 is about 516.4575619084.

The spelling of 137753906 in words is "one hundred thirty-seven million, seven hundred fifty-three thousand, nine hundred six".