6354858221 has 2 divisors, whose sum is σ = 6354858222. Its totient is φ = 6354858220.

The previous prime is 6354858193. The next prime is 6354858241. The reversal of 6354858221 is 1228584536.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6354481225 + 376996 = 79715^2 + 614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6354858221 is a prime.

It is a super-2 number, since 2×6354858221² = 80768446018022569682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6354858241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3177429110 + 3177429111.

It is an arithmetic number, because the mean of its divisors is an integer number (3177429111).

Almost surely, 2^6354858221 is an apocalyptic number.

It is an amenable number.

6354858221 is a deficient number, since it is larger than the sum of its proper divisors (1).

6354858221 is an equidigital number, since it uses as much as digits as its factorization.

6354858221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 460800, while the sum is 44.

The square root of 6354858221 is about 79717.3646139911. The cubic root of 6354858221 is about 1852.2600303399.

The spelling of 6354858221 in words is "six billion, three hundred fifty-four million, eight hundred fifty-eight thousand, two hundred twenty-one".