5209556357 has 2 divisors, whose sum is σ = 5209556358. Its totient is φ = 5209556356.

The previous prime is 5209556333. The next prime is 5209556423. The reversal of 5209556357 is 7536559025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4732614436 + 476941921 = 68794^2 + 21839^2 .

It is a cyclic number.

It is not a de Polignac number, because 5209556357 - 2⁸ = 5209556101 is a prime.

It is a super-2 number, since 2×5209556357² = 54278954873518222898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5209559357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2604778178 + 2604778179.

It is an arithmetic number, because the mean of its divisors is an integer number (2604778179).

Almost surely, 2^5209556357 is an apocalyptic number.

It is an amenable number.

5209556357 is a deficient number, since it is larger than the sum of its proper divisors (1).

5209556357 is an equidigital number, since it uses as much as digits as its factorization.

5209556357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1417500, while the sum is 47.

The square root of 5209556357 is about 72177.2565078502. The cubic root of 5209556357 is about 1733.5388548175.

The spelling of 5209556357 in words is "five billion, two hundred nine million, five hundred fifty-six thousand, three hundred fifty-seven".