556147387 has 2 divisors, whose sum is σ = 556147388. Its totient is φ = 556147386.

The previous prime is 556147357. The next prime is 556147433. The reversal of 556147387 is 783741655.

It is an a-pointer prime, because the next prime (556147433) can be obtained adding 556147387 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556147387 is a prime.

It is not a weakly prime, because it can be changed into another prime (556147327) by changing a digit.

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, 278073693 + 278073694.

It is an arithmetic number, because the mean of its divisors is an integer number (278073694).

Almost surely, 2^556147387 is an apocalyptic number.

556147387 is a deficient number, since it is larger than the sum of its proper divisors (1).

556147387 is an equidigital number, since it uses as much as digits as its factorization.

556147387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 46.

The square root of 556147387 is about 23582.7773385579. Note that the first 3 decimals coincide. The cubic root of 556147387 is about 822.3625042165.

It can be divided in two parts, 55614 and 7387, that added together give a square (63001 = 251²).

The spelling of 556147387 in words is "five hundred fifty-six million, one hundred forty-seven thousand, three hundred eighty-seven".