5121631 has 2 divisors, whose sum is σ = 5121632. Its totient is φ = 5121630.

The previous prime is 5121593. The next prime is 5121643. The reversal of 5121631 is 1361215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5121631 - 2⁹ = 5121119 is a prime.

It is a super-2 number, since 2×5121631² = 52462208200322, which contains 22 as substring.

5121631 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5121599 and 5121608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5121691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560815 + 2560816.

It is an arithmetic number, because the mean of its divisors is an integer number (2560816).

Almost surely, 2^5121631 is an apocalyptic number.

5121631 is a deficient number, since it is larger than the sum of its proper divisors (1).

5121631 is an equidigital number, since it uses as much as digits as its factorization.

5121631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180, while the sum is 19.

The square root of 5121631 is about 2263.1020745870. The cubic root of 5121631 is about 172.3730747334.

Adding to 5121631 its reverse (1361215), we get a palindrome (6482846).

The spelling of 5121631 in words is "five million, one hundred twenty-one thousand, six hundred thirty-one".