4615497221 has 2 divisors, whose sum is σ = 4615497222. Its totient is φ = 4615497220.

The previous prime is 4615497169. The next prime is 4615497287. The reversal of 4615497221 is 1227945164.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2941869121 + 1673628100 = 54239^2 + 40910^2 .

It is a cyclic number.

It is not a de Polignac number, because 4615497221 - 2²⁶ = 4548388357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4615497521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2307748610 + 2307748611.

It is an arithmetic number, because the mean of its divisors is an integer number (2307748611).

Almost surely, 2^4615497221 is an apocalyptic number.

It is an amenable number.

4615497221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4615497221 is an equidigital number, since it uses as much as digits as its factorization.

4615497221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 4615497221 is about 67937.4507985102. The cubic root of 4615497221 is about 1664.9690490749.

The spelling of 4615497221 in words is "four billion, six hundred fifteen million, four hundred ninety-seven thousand, two hundred twenty-one".