84001517 has 2 divisors, whose sum is σ = 84001518. Its totient is φ = 84001516.

The previous prime is 84001499. The next prime is 84001553. The reversal of 84001517 is 71510048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45981961 + 38019556 = 6781^2 + 6166^2 .

It is a cyclic number.

It is not a de Polignac number, because 84001517 - 2²⁰ = 82952941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84001117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42000758 + 42000759.

It is an arithmetic number, because the mean of its divisors is an integer number (42000759).

Almost surely, 2^84001517 is an apocalyptic number.

It is an amenable number.

84001517 is a deficient number, since it is larger than the sum of its proper divisors (1).

84001517 is an equidigital number, since it uses as much as digits as its factorization.

84001517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 84001517 is about 9165.2341486729. The cubic root of 84001517 is about 437.9545503739.

The spelling of 84001517 in words is "eighty-four million, one thousand, five hundred seventeen".