5205157547 has 2 divisors, whose sum is σ = 5205157548. Its totient is φ = 5205157546.

The previous prime is 5205157543. The next prime is 5205157553. The reversal of 5205157547 is 7457515025.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5205157547 - 2² = 5205157543 is a prime.

It is not a weakly prime, because it can be changed into another prime (5205157541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2602578773 + 2602578774.

It is an arithmetic number, because the mean of its divisors is an integer number (2602578774).

Almost surely, 2^5205157547 is an apocalyptic number.

5205157547 is a deficient number, since it is larger than the sum of its proper divisors (1).

5205157547 is an equidigital number, since it uses as much as digits as its factorization.

5205157547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 245000, while the sum is 41.

The square root of 5205157547 is about 72146.7778005366. Note that the first 3 decimals coincide. The cubic root of 5205157547 is about 1733.0507994828.

The spelling of 5205157547 in words is "five billion, two hundred five million, one hundred fifty-seven thousand, five hundred forty-seven".