12537403 has 2 divisors, whose sum is σ = 12537404. Its totient is φ = 12537402.

The previous prime is 12537389. The next prime is 12537407. The reversal of 12537403 is 30473521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12537403 - 2⁹ = 12536891 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (12537407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6268701 + 6268702.

It is an arithmetic number, because the mean of its divisors is an integer number (6268702).

Almost surely, 2^12537403 is an apocalyptic number.

12537403 is a deficient number, since it is larger than the sum of its proper divisors (1).

12537403 is an equidigital number, since it uses as much as digits as its factorization.

12537403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 12537403 is about 3540.8195379036. The cubic root of 12537403 is about 232.3106903128.

The spelling of 12537403 in words is "twelve million, five hundred thirty-seven thousand, four hundred three".