137215541 has 2 divisors, whose sum is σ = 137215542. Its totient is φ = 137215540.

The previous prime is 137215489. The next prime is 137215553. The reversal of 137215541 is 145512731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132135025 + 5080516 = 11495^2 + 2254^2 .

It is a cyclic number.

It is not a de Polignac number, because 137215541 - 2²² = 133021237 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137215571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68607770 + 68607771.

It is an arithmetic number, because the mean of its divisors is an integer number (68607771).

Almost surely, 2^137215541 is an apocalyptic number.

It is an amenable number.

137215541 is a deficient number, since it is larger than the sum of its proper divisors (1).

137215541 is an equidigital number, since it uses as much as digits as its factorization.

137215541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 29.

The square root of 137215541 is about 11713.9037472569. The cubic root of 137215541 is about 515.7838830654.

The spelling of 137215541 in words is "one hundred thirty-seven million, two hundred fifteen thousand, five hundred forty-one".