137805540 has 96 divisors (see below), whose sum is σ = 407801856. Its totient is φ = 34715520.

The previous prime is 137805529. The next prime is 137805557. The reversal of 137805540 is 45508731.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79119 + ... + 80841.

It is an arithmetic number, because the mean of its divisors is an integer number (4247936).

Almost surely, 2^137805540 is an apocalyptic number.

137805540 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 137805540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203900928).

137805540 is an abundant number, since it is smaller than the sum of its proper divisors (269996316).

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

137805540 is a wasteful number, since it uses less digits than its factorization.

137805540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809 (or 1807 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 137805540 is about 11739.0604394049. The cubic root of 137805540 is about 516.5220814065.

The spelling of 137805540 in words is "one hundred thirty-seven million, eight hundred five thousand, five hundred forty".