6267255557 has 4 divisors (see below), whose sum is σ = 6270079596. Its totient is φ = 6264431520.

The previous prime is 6267255551. The next prime is 6267255559. The reversal of 6267255557 is 7555527626.

It is a Cunningham number, because it is equal to 79166²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7555527626 = 2 ⋅3777763813.

It can be written as a sum of positive squares in 2 ways, for example, as 4250257636 + 2016997921 = 65194^2 + 44911^2 .

It is a cyclic number.

It is not a de Polignac number, because 6267255557 - 2¹⁰ = 6267254533 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 (6267255551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1408688 + ... + 1413129.

It is an arithmetic number, because the mean of its divisors is an integer number (1567519899).

Almost surely, 2^6267255557 is an apocalyptic number.

It is an amenable number.

6267255557 is a deficient number, since it is larger than the sum of its proper divisors (2824039).

6267255557 is a wasteful number, since it uses less digits than its factorization.

6267255557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824038.

The product of its digits is 4410000, while the sum is 50.

The square root of 6267255557 is about 79166.0000063158. Note that the first 5 decimals coincide. The cubic root of 6267255557 is about 1843.7093920356.

The spelling of 6267255557 in words is "six billion, two hundred sixty-seven million, two hundred fifty-five thousand, five hundred fifty-seven".