5255357861 has 8 divisors (see below), whose sum is σ = 5660901624. Its totient is φ = 4849997760.

The previous prime is 5255357803. The next prime is 5255357879. The reversal of 5255357861 is 1687535525.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 429276961 + 4826080900 = 20719^2 + 69470^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5255357861 - 2¹⁴ = 5255341477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5255357761) 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, 16691 + ... + 103871.

It is an arithmetic number, because the mean of its divisors is an integer number (707612703).

Almost surely, 2^5255357861 is an apocalyptic number.

It is an amenable number.

5255357861 is a deficient number, since it is larger than the sum of its proper divisors (405543763).

5255357861 is a wasteful number, since it uses less digits than its factorization.

5255357861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91831.

The product of its digits is 1260000, while the sum is 47.

The square root of 5255357861 is about 72493.8470561468. The cubic root of 5255357861 is about 1738.6043616692.

The spelling of 5255357861 in words is "five billion, two hundred fifty-five million, three hundred fifty-seven thousand, eight hundred sixty-one".