137220155 has 8 divisors (see below), whose sum is σ = 164856384. Its totient is φ = 109648000.

The previous prime is 137220133. The next prime is 137220157. The reversal of 137220155 is 551022731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 137220155 - 2²⁰ = 136171579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137220157) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11171 + ... + 19980.

It is an arithmetic number, because the mean of its divisors is an integer number (20607048).

Almost surely, 2^137220155 is an apocalyptic number.

137220155 is a deficient number, since it is larger than the sum of its proper divisors (27636229).

137220155 is an equidigital number, since it uses as much as digits as its factorization.

137220155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32037.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 137220155 is about 11714.1006910475. The cubic root of 137220155 is about 515.7896642380.

Adding to 137220155 its reverse (551022731), we get a palindrome (688242886).

The spelling of 137220155 in words is "one hundred thirty-seven million, two hundred twenty thousand, one hundred fifty-five".