2455455421 has 2 divisors, whose sum is σ = 2455455422. Its totient is φ = 2455455420.

The previous prime is 2455455397. The next prime is 2455455427. The reversal of 2455455421 is 1245545542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2154259396 + 301196025 = 46414^2 + 17355^2 .

It is a cyclic number.

It is not a de Polignac number, because 2455455421 - 2⁵ = 2455455389 is a prime.

It is a super-2 number, since 2×2455455421² = 12058522649036574482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2455455427) 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 as a sum of consecutive naturals, namely, 1227727710 + 1227727711.

It is an arithmetic number, because the mean of its divisors is an integer number (1227727711).

Almost surely, 2^2455455421 is an apocalyptic number.

It is an amenable number.

2455455421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2455455421 is an equidigital number, since it uses as much as digits as its factorization.

2455455421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 160000, while the sum is 37.

The square root of 2455455421 is about 49552.5521138922. The cubic root of 2455455421 is about 1349.0996137931.

The spelling of 2455455421 in words is "two billion, four hundred fifty-five million, four hundred fifty-five thousand, four hundred twenty-one".