137215553 has 2 divisors, whose sum is σ = 137215554. Its totient is φ = 137215552.

The previous prime is 137215541. The next prime is 137215571. The reversal of 137215553 is 355512731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126607504 + 10608049 = 11252^2 + 3257^2 .

It is a cyclic number.

It is not a de Polignac number, because 137215553 - 2⁶ = 137215489 is a prime.

It is not a weakly prime, because it can be changed into another prime (137215583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68607776 + 68607777.

It is an arithmetic number, because the mean of its divisors is an integer number (68607777).

Almost surely, 2^137215553 is an apocalyptic number.

It is an amenable number.

137215553 is a deficient number, since it is larger than the sum of its proper divisors (1).

137215553 is an equidigital number, since it uses as much as digits as its factorization.

137215553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15750, while the sum is 32.

The square root of 137215553 is about 11713.9042594687. The cubic root of 137215553 is about 515.7838981011.

The spelling of 137215553 in words is "one hundred thirty-seven million, two hundred fifteen thousand, five hundred fifty-three".