137681550 has 72 divisors (see below), whose sum is σ = 371598240. Its totient is φ = 36547200.

The previous prime is 137681539. The next prime is 137681563. The reversal of 137681550 is 55186731.

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 35 ways as a sum of consecutive naturals, for example, 121386 + ... + 122514.

Almost surely, 2^137681550 is an apocalyptic number.

137681550 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 137681550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185799120).

137681550 is an abundant number, since it is smaller than the sum of its proper divisors (233916690).

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

137681550 is a wasteful number, since it uses less digits than its factorization.

137681550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418 (or 1410 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 137681550 is about 11733.7781639163. The cubic root of 137681550 is about 516.3671220095.

The spelling of 137681550 in words is "one hundred thirty-seven million, six hundred eighty-one thousand, five hundred fifty".