2453555021 has 2 divisors, whose sum is σ = 2453555022. Its totient is φ = 2453555020.

The previous prime is 2453555003. The next prime is 2453555051. The reversal of 2453555021 is 1205553542.

2453555021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1954524100 + 499030921 = 44210^2 + 22339^2 .

It is a cyclic number.

It is not a de Polignac number, because 2453555021 - 2¹⁰ = 2453553997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2453555051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1226777510 + 1226777511.

It is an arithmetic number, because the mean of its divisors is an integer number (1226777511).

Almost surely, 2^2453555021 is an apocalyptic number.

It is an amenable number.

2453555021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2453555021 is an equidigital number, since it uses as much as digits as its factorization.

2453555021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 2453555021 is about 49533.3728005675. The cubic root of 2453555021 is about 1348.7514786985.

The spelling of 2453555021 in words is "two billion, four hundred fifty-three million, five hundred fifty-five thousand, twenty-one".