5266981 has 4 divisors (see below), whose sum is σ = 5366412. Its totient is φ = 5167552.

The previous prime is 5266979. The next prime is 5266997. The reversal of 5266981 is 1896625.

5266981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1522756 + 3744225 = 1234^2 + 1935^2 .

It is a cyclic number.

It is not a de Polignac number, because 5266981 - 2¹ = 5266979 is a prime.

It is a super-2 number, since 2×5266981² = 55482177708722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5266981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5266181) 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, 49636 + ... + 49741.

It is an arithmetic number, because the mean of its divisors is an integer number (1341603).

Almost surely, 2^5266981 is an apocalyptic number.

It is an amenable number.

5266981 is a deficient number, since it is larger than the sum of its proper divisors (99431).

5266981 is an equidigital number, since it uses as much as digits as its factorization.

5266981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99430.

The product of its digits is 25920, while the sum is 37.

The square root of 5266981 is about 2294.9904139233. The cubic root of 5266981 is about 173.9885159990.

The spelling of 5266981 in words is "five million, two hundred sixty-six thousand, nine hundred eighty-one".