12504977 has 2 divisors, whose sum is σ = 12504978. Its totient is φ = 12504976.

The previous prime is 12504953. The next prime is 12505037. The reversal of 12504977 is 77940521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12503296 + 1681 = 3536^2 + 41^2 .

It is an emirp because it is prime and its reverse (77940521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12504977 - 2⁸ = 12504721 is a prime.

It is not a weakly prime, because it can be changed into another prime (12504917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6252488 + 6252489.

It is an arithmetic number, because the mean of its divisors is an integer number (6252489).

Almost surely, 2^12504977 is an apocalyptic number.

It is an amenable number.

12504977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12504977 is an equidigital number, since it uses as much as digits as its factorization.

12504977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 12504977 is about 3536.2376899750. The cubic root of 12504977 is about 232.1102391771.

The spelling of 12504977 in words is "twelve million, five hundred four thousand, nine hundred seventy-seven".