621113055 has 32 divisors (see below), whose sum is σ = 1027983360. Its totient is φ = 319904640.

The previous prime is 621113047. The next prime is 621113081. The reversal of 621113055 is 550311126.

It is not a de Polignac number, because 621113055 - 2³ = 621113047 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 283956 + ... + 286134.

It is an arithmetic number, because the mean of its divisors is an integer number (32124480).

Almost surely, 2^621113055 is an apocalyptic number.

621113055 is a deficient number, since it is larger than the sum of its proper divisors (406870305).

621113055 is a wasteful number, since it uses less digits than its factorization.

621113055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 621113055 is about 24922.1398559594. The cubic root of 621113055 is about 853.2118643053.

The spelling of 621113055 in words is "six hundred twenty-one million, one hundred thirteen thousand, fifty-five".