5631247837 has 2 divisors, whose sum is σ = 5631247838. Its totient is φ = 5631247836.

The previous prime is 5631247799. The next prime is 5631247847. The reversal of 5631247837 is 7387421365.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5576206276 + 55041561 = 74674^2 + 7419^2 .

It is a cyclic number.

It is not a de Polignac number, because 5631247837 - 2²⁷ = 5497030109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5631247847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2815623918 + 2815623919.

It is an arithmetic number, because the mean of its divisors is an integer number (2815623919).

Almost surely, 2^5631247837 is an apocalyptic number.

It is an amenable number.

5631247837 is a deficient number, since it is larger than the sum of its proper divisors (1).

5631247837 is an equidigital number, since it uses as much as digits as its factorization.

5631247837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 46.

The square root of 5631247837 is about 75041.6406870212. The cubic root of 5631247837 is about 1779.1048645951.

The spelling of 5631247837 in words is "five billion, six hundred thirty-one million, two hundred forty-seven thousand, eight hundred thirty-seven".