611056551 has 16 divisors (see below), whose sum is σ = 985906944. Its totient is φ = 328635264.

The previous prime is 611056513. The next prime is 611056561. The reversal of 611056551 is 155650116.

It is not a de Polignac number, because 611056551 - 2⁷ = 611056423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611056561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 855465 + ... + 856178.

It is an arithmetic number, because the mean of its divisors is an integer number (61619184).

Almost surely, 2^611056551 is an apocalyptic number.

611056551 is a deficient number, since it is larger than the sum of its proper divisors (374850393).

611056551 is a wasteful number, since it uses less digits than its factorization.

611056551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711670.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 611056551 is about 24719.5580664380. The cubic root of 611056551 is about 848.5819729224.

The spelling of 611056551 in words is "six hundred eleven million, fifty-six thousand, five hundred fifty-one".