2475221389 has 2 divisors, whose sum is σ = 2475221390. Its totient is φ = 2475221388.

The previous prime is 2475221327. The next prime is 2475221417. The reversal of 2475221389 is 9831225742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1694968900 + 780252489 = 41170^2 + 27933^2 .

It is a cyclic number.

It is not a de Polignac number, because 2475221389 - 2⁷ = 2475221261 is a prime.

It is a super-2 number, since 2×2475221389² = 12253441849126178642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2475221689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1237610694 + 1237610695.

It is an arithmetic number, because the mean of its divisors is an integer number (1237610695).

Almost surely, 2^2475221389 is an apocalyptic number.

It is an amenable number.

2475221389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2475221389 is an equidigital number, since it uses as much as digits as its factorization.

2475221389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

The square root of 2475221389 is about 49751.5968487445. The cubic root of 2475221389 is about 1352.7099454397.

The spelling of 2475221389 in words is "two billion, four hundred seventy-five million, two hundred twenty-one thousand, three hundred eighty-nine".