2245512421 has 2 divisors, whose sum is σ = 2245512422. Its totient is φ = 2245512420.

The previous prime is 2245512407. The next prime is 2245512431. The reversal of 2245512421 is 1242155422.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2005696225 + 239816196 = 44785^2 + 15486^2 .

It is a cyclic number.

It is not a de Polignac number, because 2245512421 - 2⁵ = 2245512389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2245512421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2245512431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1122756210 + 1122756211.

It is an arithmetic number, because the mean of its divisors is an integer number (1122756211).

Almost surely, 2^2245512421 is an apocalyptic number.

It is an amenable number.

2245512421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2245512421 is an equidigital number, since it uses as much as digits as its factorization.

2245512421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6400, while the sum is 28.

The square root of 2245512421 is about 47386.8380565743. The cubic root of 2245512421 is about 1309.4989480969.

Adding to 2245512421 its reverse (1242155422), we get a palindrome (3487667843).

The spelling of 2245512421 in words is "two billion, two hundred forty-five million, five hundred twelve thousand, four hundred twenty-one".