7470045221 has 2 divisors, whose sum is σ = 7470045222. Its totient is φ = 7470045220.

The previous prime is 7470045101. The next prime is 7470045229. The reversal of 7470045221 is 1225400747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7142616196 + 327429025 = 84514^2 + 18095^2 .

It is a cyclic number.

It is not a de Polignac number, because 7470045221 - 2¹⁸ = 7469783077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7470045229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3735022610 + 3735022611.

It is an arithmetic number, because the mean of its divisors is an integer number (3735022611).

Almost surely, 2^7470045221 is an apocalyptic number.

It is an amenable number.

7470045221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7470045221 is an equidigital number, since it uses as much as digits as its factorization.

7470045221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 7470045221 is about 86429.4233522358. The cubic root of 7470045221 is about 1954.8243657996.

Adding to 7470045221 its reverse (1225400747), we get a palindrome (8695445968).

The spelling of 7470045221 in words is "seven billion, four hundred seventy million, forty-five thousand, two hundred twenty-one".