5261389 has 4 divisors (see below), whose sum is σ = 6013024. Its totient is φ = 4509756.

The previous prime is 5261387. The next prime is 5261419. The reversal of 5261389 is 9831625.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5261389 - 2¹ = 5261387 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5261387) 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, 375807 + ... + 375820.

It is an arithmetic number, because the mean of its divisors is an integer number (1503256).

Almost surely, 2^5261389 is an apocalyptic number.

It is an amenable number.

5261389 is a deficient number, since it is larger than the sum of its proper divisors (751635).

5261389 is an equidigital number, since it uses as much as digits as its factorization.

5261389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751634.

The product of its digits is 12960, while the sum is 34.

The square root of 5261389 is about 2293.7717846377. The cubic root of 5261389 is about 173.9269191492.

The spelling of 5261389 in words is "five million, two hundred sixty-one thousand, three hundred eighty-nine".