8219455501 has 2 divisors, whose sum is σ = 8219455502. Its totient is φ = 8219455500.

The previous prime is 8219455481. The next prime is 8219455507. The reversal of 8219455501 is 1055549128.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7267733001 + 951722500 = 85251^2 + 30850^2 .

It is a cyclic number.

It is not a de Polignac number, because 8219455501 - 2⁷ = 8219455373 is a prime.

It is a super-2 number, since 2×8219455501² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8219455507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4109727750 + 4109727751.

It is an arithmetic number, because the mean of its divisors is an integer number (4109727751).

Almost surely, 2^8219455501 is an apocalyptic number.

It is an amenable number.

8219455501 is a deficient number, since it is larger than the sum of its proper divisors (1).

8219455501 is an equidigital number, since it uses as much as digits as its factorization.

8219455501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 40.

The square root of 8219455501 is about 90661.2127704014. The cubic root of 8219455501 is about 2018.1232365151.

The spelling of 8219455501 in words is "eight billion, two hundred nineteen million, four hundred fifty-five thousand, five hundred one".