201510073 has 2 divisors, whose sum is σ = 201510074. Its totient is φ = 201510072.

The previous prime is 201510059. The next prime is 201510077. The reversal of 201510073 is 370015102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190771344 + 10738729 = 13812^2 + 3277^2 .

It is a cyclic number.

It is not a de Polignac number, because 201510073 - 2¹⁷ = 201379001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201510073.

It is not a weakly prime, because it can be changed into another prime (201510077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100755036 + 100755037.

It is an arithmetic number, because the mean of its divisors is an integer number (100755037).

Almost surely, 2^201510073 is an apocalyptic number.

It is an amenable number.

201510073 is a deficient number, since it is larger than the sum of its proper divisors (1).

201510073 is an equidigital number, since it uses as much as digits as its factorization.

201510073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 201510073 is about 14195.4243684365. The cubic root of 201510073 is about 586.2716855725.

Adding to 201510073 its reverse (370015102), we get a palindrome (571525175).

The spelling of 201510073 in words is "two hundred one million, five hundred ten thousand, seventy-three".