5555638237 has 4 divisors (see below), whose sum is σ = 5612912956. Its totient is φ = 5498363520.

The previous prime is 5555638223. The next prime is 5555638279. The reversal of 5555638237 is 7328365555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1901919321 + 3653718916 = 43611^2 + 60446^2 .

It is not a de Polignac number, because 5555638237 - 2²³ = 5547249629 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 (5555638537) 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, 28637214 + ... + 28637407.

It is an arithmetic number, because the mean of its divisors is an integer number (1403228239).

Almost surely, 2^5555638237 is an apocalyptic number.

It is an amenable number.

5555638237 is a deficient number, since it is larger than the sum of its proper divisors (57274719).

5555638237 is an equidigital number, since it uses as much as digits as its factorization.

5555638237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57274718.

The product of its digits is 3780000, while the sum is 49.

The square root of 5555638237 is about 74536.1538919201. The cubic root of 5555638237 is about 1771.1064014753.

The spelling of 5555638237 in words is "five billion, five hundred fifty-five million, six hundred thirty-eight thousand, two hundred thirty-seven".