621221483 has 2 divisors, whose sum is σ = 621221484. Its totient is φ = 621221482.

The previous prime is 621221479. The next prime is 621221501. The reversal of 621221483 is 384122126.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 621221483 - 2² = 621221479 is a prime.

It is a super-2 number, since 2×621221483² = 771832261881438578, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (621221423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310610741 + 310610742.

It is an arithmetic number, because the mean of its divisors is an integer number (310610742).

Almost surely, 2^621221483 is an apocalyptic number.

621221483 is a deficient number, since it is larger than the sum of its proper divisors (1).

621221483 is an equidigital number, since it uses as much as digits as its factorization.

621221483 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 29.

The square root of 621221483 is about 24924.3150959058. The cubic root of 621221483 is about 853.2615099495.

The spelling of 621221483 in words is "six hundred twenty-one million, two hundred twenty-one thousand, four hundred eighty-three".