137021655 has 16 divisors (see below), whose sum is σ = 219512160. Its totient is φ = 72985728.

The previous prime is 137021639. The next prime is 137021669. The reversal of 137021655 is 556120731.

It is not a de Polignac number, because 137021655 - 2⁴ = 137021639 is a prime.

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, 7441 + ... + 18149.

It is an arithmetic number, because the mean of its divisors is an integer number (13719510).

Almost surely, 2^137021655 is an apocalyptic number.

137021655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

137021655 is a deficient number, since it is larger than the sum of its proper divisors (82490505).

137021655 is a wasteful number, since it uses less digits than its factorization.

137021655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11570.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 137021655 is about 11705.6249299215. The cubic root of 137021655 is about 515.5408337920.

The spelling of 137021655 in words is "one hundred thirty-seven million, twenty-one thousand, six hundred fifty-five".