137564423 has 2 divisors, whose sum is σ = 137564424. Its totient is φ = 137564422.

The previous prime is 137564407. The next prime is 137564437. The reversal of 137564423 is 324465731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137564423 - 2⁴ = 137564407 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137524423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68782211 + 68782212.

It is an arithmetic number, because the mean of its divisors is an integer number (68782212).

Almost surely, 2^137564423 is an apocalyptic number.

137564423 is a deficient number, since it is larger than the sum of its proper divisors (1).

137564423 is an equidigital number, since it uses as much as digits as its factorization.

137564423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 35.

The square root of 137564423 is about 11728.7860838196. The cubic root of 137564423 is about 516.2206543323.

The spelling of 137564423 in words is "one hundred thirty-seven million, five hundred sixty-four thousand, four hundred twenty-three".