4573356421 has 2 divisors, whose sum is σ = 4573356422. Its totient is φ = 4573356420.

The previous prime is 4573356419. The next prime is 4573356427. The reversal of 4573356421 is 1246533754.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3376888321 + 1196468100 = 58111^2 + 34590^2 .

It is a cyclic number.

It is not a de Polignac number, because 4573356421 - 2¹ = 4573356419 is a prime.

Together with 4573356419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4573356427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2286678210 + 2286678211.

It is an arithmetic number, because the mean of its divisors is an integer number (2286678211).

Almost surely, 2^4573356421 is an apocalyptic number.

It is an amenable number.

4573356421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4573356421 is an equidigital number, since it uses as much as digits as its factorization.

4573356421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 40.

The square root of 4573356421 is about 67626.5955153740. The cubic root of 4573356421 is about 1659.8863353004.

The spelling of 4573356421 in words is "four billion, five hundred seventy-three million, three hundred fifty-six thousand, four hundred twenty-one".