12555451 has 2 divisors, whose sum is σ = 12555452. Its totient is φ = 12555450.

The previous prime is 12555443. The next prime is 12555457. The reversal of 12555451 is 15455521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12555451 - 2³ = 12555443 is a prime.

It is not a weakly prime, because it can be changed into another prime (12555457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6277725 + 6277726.

It is an arithmetic number, because the mean of its divisors is an integer number (6277726).

Almost surely, 2^12555451 is an apocalyptic number.

12555451 is a deficient number, since it is larger than the sum of its proper divisors (1).

12555451 is an equidigital number, since it uses as much as digits as its factorization.

12555451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5000, while the sum is 28.

The square root of 12555451 is about 3543.3671839085. The cubic root of 12555451 is about 232.4221098012.

The spelling of 12555451 in words is "twelve million, five hundred fifty-five thousand, four hundred fifty-one".