611556055 has 16 divisors (see below), whose sum is σ = 801511200. Its totient is φ = 444252160.

The previous prime is 611556037. The next prime is 611556061. The reversal of 611556055 is 550655116.

It is not a de Polignac number, because 611556055 - 2¹⁹ = 611031767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 611556055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45111 + ... + 57079.

It is an arithmetic number, because the mean of its divisors is an integer number (50094450).

Almost surely, 2^611556055 is an apocalyptic number.

611556055 is a deficient number, since it is larger than the sum of its proper divisors (189955145).

611556055 is a wasteful number, since it uses less digits than its factorization.

611556055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12914.

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 611556055 is about 24729.6594194097. The cubic root of 611556055 is about 848.8131324580.

The spelling of 611556055 in words is "six hundred eleven million, five hundred fifty-six thousand, fifty-five".