2253636421 has 2 divisors, whose sum is σ = 2253636422. Its totient is φ = 2253636420.

The previous prime is 2253636409. The next prime is 2253636431. The reversal of 2253636421 is 1246363522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1944369025 + 309267396 = 44095^2 + 17586^2 .

It is a cyclic number.

It is not a de Polignac number, because 2253636421 - 2¹³ = 2253628229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2253636401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1126818210 + 1126818211.

It is an arithmetic number, because the mean of its divisors is an integer number (1126818211).

Almost surely, 2^2253636421 is an apocalyptic number.

It is an amenable number.

2253636421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2253636421 is an equidigital number, since it uses as much as digits as its factorization.

2253636421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 34.

The square root of 2253636421 is about 47472.4806703842. The cubic root of 2253636421 is about 1311.0762518818.

Adding to 2253636421 its reverse (1246363522), we get a palindrome (3499999943).

The spelling of 2253636421 in words is "two billion, two hundred fifty-three million, six hundred thirty-six thousand, four hundred twenty-one".