137521063 has 2 divisors, whose sum is σ = 137521064. Its totient is φ = 137521062.

The previous prime is 137521037. The next prime is 137521073. The reversal of 137521063 is 360125731.

137521063 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137521063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137521073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68760531 + 68760532.

It is an arithmetic number, because the mean of its divisors is an integer number (68760532).

Almost surely, 2^137521063 is an apocalyptic number.

137521063 is a deficient number, since it is larger than the sum of its proper divisors (1).

137521063 is an equidigital number, since it uses as much as digits as its factorization.

137521063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 137521063 is about 11726.9374945038. The cubic root of 137521063 is about 516.1664114323.

Adding to 137521063 its reverse (360125731), we get a palindrome (497646794).

The spelling of 137521063 in words is "one hundred thirty-seven million, five hundred twenty-one thousand, sixty-three".