5211556557 has 8 divisors (see below), whose sum is σ = 6957313440. Its totient is φ = 3470085360.

The previous prime is 5211556549. The next prime is 5211556579. The reversal of 5211556557 is 7556551125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5211556557 - 2³ = 5211556549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5211556547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1068582 + ... + 1073447.

It is an arithmetic number, because the mean of its divisors is an integer number (869664180).

Almost surely, 2^5211556557 is an apocalyptic number.

It is an amenable number.

5211556557 is a deficient number, since it is larger than the sum of its proper divisors (1745756883).

5211556557 is a wasteful number, since it uses less digits than its factorization.

5211556557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142843.

The product of its digits is 262500, while the sum is 42.

The square root of 5211556557 is about 72191.1113434334. Note that the first 3 decimals coincide. The cubic root of 5211556557 is about 1733.7606894937.

The spelling of 5211556557 in words is "five billion, two hundred eleven million, five hundred fifty-six thousand, five hundred fifty-seven".