12520351 has 2 divisors, whose sum is σ = 12520352. Its totient is φ = 12520350.

The previous prime is 12520337. The next prime is 12520367. The reversal of 12520351 is 15302521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12520351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12520051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6260175 + 6260176.

It is an arithmetic number, because the mean of its divisors is an integer number (6260176).

Almost surely, 2^12520351 is an apocalyptic number.

12520351 is a deficient number, since it is larger than the sum of its proper divisors (1).

12520351 is an equidigital number, since it uses as much as digits as its factorization.

12520351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 12520351 is about 3538.4108014757. The cubic root of 12520351 is about 232.2053213571.

Adding to 12520351 its reverse (15302521), we get a palindrome (27822872).

The spelling of 12520351 in words is "twelve million, five hundred twenty thousand, three hundred fifty-one".