5398531 has 2 divisors, whose sum is σ = 5398532. Its totient is φ = 5398530.

The previous prime is 5398529. The next prime is 5398543. The reversal of 5398531 is 1358935.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5398531 - 2¹ = 5398529 is a prime.

It is a super-2 number, since 2×5398531² = 58288273915922, which contains 22 as substring.

Together with 5398529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5398501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2699265 + 2699266.

It is an arithmetic number, because the mean of its divisors is an integer number (2699266).

Almost surely, 2^5398531 is an apocalyptic number.

5398531 is a deficient number, since it is larger than the sum of its proper divisors (1).

5398531 is an equidigital number, since it uses as much as digits as its factorization.

5398531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 34.

The square root of 5398531 is about 2323.4739077511. The cubic root of 5398531 is about 175.4251540275.

It can be divided in two parts, 53985 and 31, that multiplied together give a triangular number (1673535 = T₁₈₂₉).

The spelling of 5398531 in words is "five million, three hundred ninety-eight thousand, five hundred thirty-one".