5122981 has 2 divisors, whose sum is σ = 5122982. Its totient is φ = 5122980.

The previous prime is 5122973. The next prime is 5122987. The reversal of 5122981 is 1892215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3276100 + 1846881 = 1810^2 + 1359^2 .

It is a cyclic number.

It is not a de Polignac number, because 5122981 - 2³ = 5122973 is a prime.

It is a super-2 number, since 2×5122981² = 52489868652722, which contains 22 as substring.

5122981 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5122987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2561490 + 2561491.

It is an arithmetic number, because the mean of its divisors is an integer number (2561491).

Almost surely, 2^5122981 is an apocalyptic number.

5122981 is the 1432-nd centered pentagonal number.

It is an amenable number.

5122981 is a deficient number, since it is larger than the sum of its proper divisors (1).

5122981 is an equidigital number, since it uses as much as digits as its factorization.

5122981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 28.

The square root of 5122981 is about 2263.4003181055. The cubic root of 5122981 is about 172.3882185556.

It can be divided in two parts, 51 and 22981, that added together give a palindrome (23032).

The spelling of 5122981 in words is "five million, one hundred twenty-two thousand, nine hundred eighty-one".