3554250221 has 2 divisors, whose sum is σ = 3554250222. Its totient is φ = 3554250220.

The previous prime is 3554250173. The next prime is 3554250247. The reversal of 3554250221 is 1220524553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2710347721 + 843902500 = 52061^2 + 29050^2 .

It is an emirp because it is prime and its reverse (1220524553) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3554250221 - 2¹⁰ = 3554249197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3554250281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1777125110 + 1777125111.

It is an arithmetic number, because the mean of its divisors is an integer number (1777125111).

Almost surely, 2^3554250221 is an apocalyptic number.

It is an amenable number.

3554250221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3554250221 is an equidigital number, since it uses as much as digits as its factorization.

3554250221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 3554250221 is about 59617.5328322130. The cubic root of 3554250221 is about 1526.0988544938.

Adding to 3554250221 its reverse (1220524553), we get a palindrome (4774774774).

The spelling of 3554250221 in words is "three billion, five hundred fifty-four million, two hundred fifty thousand, two hundred twenty-one".