12555454 has 4 divisors (see below), whose sum is σ = 18833184. Its totient is φ = 6277726.

The previous prime is 12555451. The next prime is 12555457. The reversal of 12555454 is 45455521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45455521 = 23 ⋅1976327.

It is an interprime number because it is at equal distance from previous prime (12555451) and next prime (12555457).

It is a super-2 number, since 2×12555454² = 315278850292232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12555451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3138862 + ... + 3138865.

It is an arithmetic number, because the mean of its divisors is an integer number (4708296).

Almost surely, 2^12555454 is an apocalyptic number.

12555454 is a deficient number, since it is larger than the sum of its proper divisors (6277730).

12555454 is an equidigital number, since it uses as much as digits as its factorization.

12555454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6277729.

The product of its digits is 20000, while the sum is 31.

The square root of 12555454 is about 3543.3676072347. The cubic root of 12555454 is about 232.4221283128.

The spelling of 12555454 in words is "twelve million, five hundred fifty-five thousand, four hundred fifty-four".