556626454 has 4 divisors (see below), whose sum is σ = 834939684. Its totient is φ = 278313226.

The previous prime is 556626391. The next prime is 556626463. The reversal of 556626454 is 454626655.

It is a happy number.

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

It is a super-2 number, since 2×556626454² = 619666018585228232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 556626454.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139156612 + ... + 139156615.

It is an arithmetic number, because the mean of its divisors is an integer number (208734921).

Almost surely, 2^556626454 is an apocalyptic number.

556626454 is a deficient number, since it is larger than the sum of its proper divisors (278313230).

556626454 is a wasteful number, since it uses less digits than its factorization.

556626454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278313229.

The product of its digits is 864000, while the sum is 43.

The square root of 556626454 is about 23592.9322891412. The cubic root of 556626454 is about 822.5985649441.

The spelling of 556626454 in words is "five hundred fifty-six million, six hundred twenty-six thousand, four hundred fifty-four".