101670521 has 2 divisors, whose sum is σ = 101670522. Its totient is φ = 101670520.

The previous prime is 101670479. The next prime is 101670559. The reversal of 101670521 is 125076101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86955625 + 14714896 = 9325^2 + 3836^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101670521 is a prime.

It is a super-2 number, since 2×101670521² = 20673789680822882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (101670571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50835260 + 50835261.

It is an arithmetic number, because the mean of its divisors is an integer number (50835261).

Almost surely, 2^101670521 is an apocalyptic number.

It is an amenable number.

101670521 is a deficient number, since it is larger than the sum of its proper divisors (1).

101670521 is an equidigital number, since it uses as much as digits as its factorization.

101670521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 101670521 is about 10083.1801035189. The cubic root of 101670521 is about 466.7292471064.

The spelling of 101670521 in words is "one hundred one million, six hundred seventy thousand, five hundred twenty-one".