137894557 has 2 divisors, whose sum is σ = 137894558. Its totient is φ = 137894556.

The previous prime is 137894543. The next prime is 137894563. The reversal of 137894557 is 755498731.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125686521 + 12208036 = 11211^2 + 3494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137894557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137894557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137894527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68947278 + 68947279.

It is an arithmetic number, because the mean of its divisors is an integer number (68947279).

Almost surely, 2^137894557 is an apocalyptic number.

It is an amenable number.

137894557 is a deficient number, since it is larger than the sum of its proper divisors (1).

137894557 is an equidigital number, since it uses as much as digits as its factorization.

137894557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 49.

The square root of 137894557 is about 11742.8513147361. The cubic root of 137894557 is about 516.6332751689.

The spelling of 137894557 in words is "one hundred thirty-seven million, eight hundred ninety-four thousand, five hundred fifty-seven".