137222637 has 4 divisors (see below), whose sum is σ = 182963520. Its totient is φ = 91481756.

The previous prime is 137222629. The next prime is 137222641. The reversal of 137222637 is 736222731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 736222731 = 3 ⋅245407577.

It is a cyclic number.

It is not a de Polignac number, because 137222637 - 2³ = 137222629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 137222598 and 137222607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137222537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22870437 + ... + 22870442.

It is an arithmetic number, because the mean of its divisors is an integer number (45740880).

Almost surely, 2^137222637 is an apocalyptic number.

It is an amenable number.

137222637 is a deficient number, since it is larger than the sum of its proper divisors (45740883).

137222637 is an equidigital number, since it uses as much as digits as its factorization.

137222637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45740882.

The product of its digits is 21168, while the sum is 33.

The square root of 137222637 is about 11714.2066312662. The cubic root of 137222637 is about 515.7927740392.

The spelling of 137222637 in words is "one hundred thirty-seven million, two hundred twenty-two thousand, six hundred thirty-seven".