13020251 has 2 divisors, whose sum is σ = 13020252. Its totient is φ = 13020250.

The previous prime is 13020233. The next prime is 13020307. The reversal of 13020251 is 15202031.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13020251 is a prime.

It is a super-2 number, since 2×13020251² = 339053872206002, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13020211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510125 + 6510126.

It is an arithmetic number, because the mean of its divisors is an integer number (6510126).

Almost surely, 2^13020251 is an apocalyptic number.

13020251 is a deficient number, since it is larger than the sum of its proper divisors (1).

13020251 is an equidigital number, since it uses as much as digits as its factorization.

13020251 is an odious number, because the sum of its binary digits is odd.

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

The square root of 13020251 is about 3608.3584910593. The cubic root of 13020251 is about 235.2554999894.

Adding to 13020251 its reverse (15202031), we get a palindrome (28222282).

The spelling of 13020251 in words is "thirteen million, twenty thousand, two hundred fifty-one".