5631973 has 2 divisors, whose sum is σ = 5631974. Its totient is φ = 5631972.

The previous prime is 5631949. The next prime is 5631979. The reversal of 5631973 is 3791365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2965284 + 2666689 = 1722^2 + 1633^2 .

It is a cyclic number.

It is not a de Polignac number, because 5631973 - 2²¹ = 3534821 is a prime.

5631973 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5631979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2815986 + 2815987.

It is an arithmetic number, because the mean of its divisors is an integer number (2815987).

Almost surely, 2^5631973 is an apocalyptic number.

It is an amenable number.

5631973 is a deficient number, since it is larger than the sum of its proper divisors (1).

5631973 is an equidigital number, since it uses as much as digits as its factorization.

5631973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 34.

The square root of 5631973 is about 2373.1778273025. The cubic root of 5631973 is about 177.9181229295.

The spelling of 5631973 in words is "five million, six hundred thirty-one thousand, nine hundred seventy-three".