2521031 has 2 divisors, whose sum is σ = 2521032. Its totient is φ = 2521030.

The previous prime is 2521021. The next prime is 2521037. The reversal of 2521031 is 1301252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2521031 is a prime.

It is a super-2 number, since 2×2521031² = 12711194605922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2520997 and 2521015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2521037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260515 + 1260516.

It is an arithmetic number, because the mean of its divisors is an integer number (1260516).

2^2521031 is an apocalyptic number.

2521031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521031 is an equidigital number, since it uses as much as digits as its factorization.

2521031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 2521031 is about 1587.7754879075. The cubic root of 2521031 is about 136.1003980400.

Adding to 2521031 its reverse (1301252), we get a palindrome (3822283).

The spelling of 2521031 in words is "two million, five hundred twenty-one thousand, thirty-one".