5205170387 has 2 divisors, whose sum is σ = 5205170388. Its totient is φ = 5205170386.

The previous prime is 5205170363. The next prime is 5205170417. The reversal of 5205170387 is 7830715025.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5205170387 - 2¹⁰ = 5205169363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5205170387.

It is not a weakly prime, because it can be changed into another prime (5205170587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2602585193 + 2602585194.

It is an arithmetic number, because the mean of its divisors is an integer number (2602585194).

Almost surely, 2^5205170387 is an apocalyptic number.

5205170387 is a deficient number, since it is larger than the sum of its proper divisors (1).

5205170387 is an equidigital number, since it uses as much as digits as its factorization.

5205170387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 5205170387 is about 72146.8667857448. The cubic root of 5205170387 is about 1733.0522245023.

The spelling of 5205170387 in words is "five billion, two hundred five million, one hundred seventy thousand, three hundred eighty-seven".