137221750 has 48 divisors (see below), whose sum is σ = 262974816. Its totient is φ = 53611200.

The previous prime is 137221741. The next prime is 137221751. The reversal of 137221750 is 57122731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137221751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1332199 + ... + 1332301.

It is an arithmetic number, because the mean of its divisors is an integer number (5478642).

Almost surely, 2^137221750 is an apocalyptic number.

137221750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137221750 is a deficient number, since it is larger than the sum of its proper divisors (125753066).

137221750 is an equidigital number, since it uses as much as digits as its factorization.

137221750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 137221750 is about 11714.1687711933. The cubic root of 137221750 is about 515.7916626843.

The spelling of 137221750 in words is "one hundred thirty-seven million, two hundred twenty-one thousand, seven hundred fifty".