137223569 has 6 divisors (see below), whose sum is σ = 159627474. Its totient is φ = 117620160.

The previous prime is 137223551. The next prime is 137223599. The reversal of 137223569 is 965322731.

137223569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 126855169 + 10368400 = 11263^2 + 3220^2 .

It is not a de Polignac number, because 137223569 - 2²⁰ = 136174993 is a prime.

It is a super-2 number, since 2×137223569² = 37660615778195522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137223509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1400192 + ... + 1400289.

It is an arithmetic number, because the mean of its divisors is an integer number (26604579).

Almost surely, 2^137223569 is an apocalyptic number.

It is an amenable number.

137223569 is a deficient number, since it is larger than the sum of its proper divisors (22403905).

137223569 is an equidigital number, since it uses as much as digits as its factorization.

137223569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800495 (or 2800488 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The square root of 137223569 is about 11714.2464119550. The cubic root of 137223569 is about 515.7939417712.

The spelling of 137223569 in words is "one hundred thirty-seven million, two hundred twenty-three thousand, five hundred sixty-nine".