12501487 has 4 divisors (see below), whose sum is σ = 13159480. Its totient is φ = 11843496.

The previous prime is 12501479. The next prime is 12501491. The reversal of 12501487 is 78410521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12501487 - 2³ = 12501479 is a prime.

It is a super-2 number, since 2×12501487² = 312574354422338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12501427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328968 + ... + 329005.

It is an arithmetic number, because the mean of its divisors is an integer number (3289870).

Almost surely, 2^12501487 is an apocalyptic number.

12501487 is a deficient number, since it is larger than the sum of its proper divisors (657993).

12501487 is an equidigital number, since it uses as much as digits as its factorization.

12501487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657992.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 12501487 is about 3535.7441932357. The cubic root of 12501487 is about 232.0886440392.

The spelling of 12501487 in words is "twelve million, five hundred one thousand, four hundred eighty-seven".