2187523253 has 2 divisors, whose sum is σ = 2187523254. Its totient is φ = 2187523252.

The previous prime is 2187523243. The next prime is 2187523291. The reversal of 2187523253 is 3523257812.

It is an a-pointer prime, because the next prime (2187523291) can be obtained adding 2187523253 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1605845329 + 581677924 = 40073^2 + 24118^2 .

It is a cyclic number.

It is not a de Polignac number, because 2187523253 - 2⁴ = 2187523237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2187523223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093761626 + 1093761627.

It is an arithmetic number, because the mean of its divisors is an integer number (1093761627).

Almost surely, 2^2187523253 is an apocalyptic number.

It is an amenable number.

2187523253 is a deficient number, since it is larger than the sum of its proper divisors (1).

2187523253 is an equidigital number, since it uses as much as digits as its factorization.

2187523253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 38.

The square root of 2187523253 is about 46770.9659190400. The cubic root of 2187523253 is about 1298.1281251061.

The spelling of 2187523253 in words is "two billion, one hundred eighty-seven million, five hundred twenty-three thousand, two hundred fifty-three".