137873550 has 48 divisors (see below), whose sum is σ = 344085120. Its totient is φ = 36534240.

The previous prime is 137873539. The next prime is 137873563. The reversal of 137873550 is 55378731.

137873550 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 137873499 and 137873508.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 21631 + ... + 27269.

It is an arithmetic number, because the mean of its divisors is an integer number (7168440).

Almost surely, 2^137873550 is an apocalyptic number.

137873550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 137873550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172042560).

137873550 is an abundant number, since it is smaller than the sum of its proper divisors (206211570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137873550 is a wasteful number, since it uses less digits than its factorization.

137873550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5817 (or 5812 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 39.

The square root of 137873550 is about 11741.9568215864. The cubic root of 137873550 is about 516.6070390200.

The spelling of 137873550 in words is "one hundred thirty-seven million, eight hundred seventy-three thousand, five hundred fifty".