2527981 has 2 divisors, whose sum is σ = 2527982. Its totient is φ = 2527980.

The previous prime is 2527963. The next prime is 2527997. The reversal of 2527981 is 1897252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2452356 + 75625 = 1566^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 2527981 - 2⁵ = 2527949 is a prime.

It is a super-2 number, since 2×2527981² = 12781375872722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2527961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1263990 + 1263991.

It is an arithmetic number, because the mean of its divisors is an integer number (1263991).

2^2527981 is an apocalyptic number.

It is an amenable number.

2527981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2527981 is an equidigital number, since it uses as much as digits as its factorization.

2527981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 34.

The square root of 2527981 is about 1589.9625781760. The cubic root of 2527981 is about 136.2253508702.

The spelling of 2527981 in words is "two million, five hundred twenty-seven thousand, nine hundred eighty-one".