137360621 has 2 divisors, whose sum is σ = 137360622. Its totient is φ = 137360620.

The previous prime is 137360611. The next prime is 137360627. The reversal of 137360621 is 126063731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71588521 + 65772100 = 8461^2 + 8110^2 .

It is a cyclic number.

It is not a de Polignac number, because 137360621 - 2¹⁰ = 137359597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137360627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68680310 + 68680311.

It is an arithmetic number, because the mean of its divisors is an integer number (68680311).

Almost surely, 2^137360621 is an apocalyptic number.

It is an amenable number.

137360621 is a deficient number, since it is larger than the sum of its proper divisors (1).

137360621 is an equidigital number, since it uses as much as digits as its factorization.

137360621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 137360621 is about 11720.0947521767. The cubic root of 137360621 is about 515.9656009859.

The spelling of 137360621 in words is "one hundred thirty-seven million, three hundred sixty thousand, six hundred twenty-one".