137781500 has 48 divisors (see below), whose sum is σ = 314024256. Its totient is φ = 52712000.

The previous prime is 137781499. The next prime is 137781529. The reversal of 137781500 is 5187731.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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 15 ways as a sum of consecutive naturals, for example, 5510 + ... + 17490.

It is an arithmetic number, because the mean of its divisors is an integer number (6542172).

Almost surely, 2^137781500 is an apocalyptic number.

137781500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 137781500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157012128).

137781500 is an abundant number, since it is smaller than the sum of its proper divisors (176242756).

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

137781500 is a wasteful number, since it uses less digits than its factorization.

137781500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12023 (or 12011 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 137781500 is about 11738.0364627139. The cubic root of 137781500 is about 516.4920441212.

The spelling of 137781500 in words is "one hundred thirty-seven million, seven hundred eighty-one thousand, five hundred".