137556901 has 2 divisors, whose sum is σ = 137556902. Its totient is φ = 137556900.

The previous prime is 137556899. The next prime is 137556917. The reversal of 137556901 is 109655731.

137556901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99980001 + 37576900 = 9999^2 + 6130^2 .

It is an emirp because it is prime and its reverse (109655731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137556901 - 2¹ = 137556899 is a prime.

Together with 137556899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137556931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68778450 + 68778451.

It is an arithmetic number, because the mean of its divisors is an integer number (68778451).

Almost surely, 2^137556901 is an apocalyptic number.

It is an amenable number.

137556901 is a deficient number, since it is larger than the sum of its proper divisors (1).

137556901 is an equidigital number, since it uses as much as digits as its factorization.

137556901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 137556901 is about 11728.4654153900. The cubic root of 137556901 is about 516.2112452074.

The spelling of 137556901 in words is "one hundred thirty-seven million, five hundred fifty-six thousand, nine hundred one".