621054055 has 8 divisors (see below), whose sum is σ = 746798112. Its totient is φ = 495821088.

The previous prime is 621054029. The next prime is 621054059. The reversal of 621054055 is 550450126.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 621054055 - 2⁵ = 621054023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621054059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125092 + ... + 129961.

It is an arithmetic number, because the mean of its divisors is an integer number (93349764).

Almost surely, 2^621054055 is an apocalyptic number.

621054055 is a deficient number, since it is larger than the sum of its proper divisors (125744057).

621054055 is a wasteful number, since it uses less digits than its factorization.

621054055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255545.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 621054055 is about 24920.9561413683. The cubic root of 621054055 is about 853.1848477026.

The spelling of 621054055 in words is "six hundred twenty-one million, fifty-four thousand, fifty-five".