618056551 has 12 divisors (see below), whose sum is σ = 725332752. Its totient is φ = 525069888.

The previous prime is 618056531. The next prime is 618056557. The reversal of 618056551 is 155650816.

It is not a de Polignac number, because 618056551 - 2⁵ = 618056519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 618056551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618056557) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 50275 + ... + 61348.

It is an arithmetic number, because the mean of its divisors is an integer number (60444396).

Almost surely, 2^618056551 is an apocalyptic number.

618056551 is a deficient number, since it is larger than the sum of its proper divisors (107276201).

618056551 is a wasteful number, since it uses less digits than its factorization.

618056551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111750 (or 111743 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 37.

The square root of 618056551 is about 24860.7431707099. The cubic root of 618056551 is about 851.8100073574.

The spelling of 618056551 in words is "six hundred eighteen million, fifty-six thousand, five hundred fifty-one".