102445253 has 2 divisors, whose sum is σ = 102445254. Its totient is φ = 102445252.

The previous prime is 102445249. The next prime is 102445271. The reversal of 102445253 is 352544201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78021889 + 24423364 = 8833^2 + 4942^2 .

It is a cyclic number.

It is not a de Polignac number, because 102445253 - 2² = 102445249 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102448253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51222626 + 51222627.

It is an arithmetic number, because the mean of its divisors is an integer number (51222627).

Almost surely, 2^102445253 is an apocalyptic number.

It is an amenable number.

102445253 is a deficient number, since it is larger than the sum of its proper divisors (1).

102445253 is an equidigital number, since it uses as much as digits as its factorization.

102445253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 102445253 is about 10121.5242429191. The cubic root of 102445253 is about 467.9117449305.

Adding to 102445253 its reverse (352544201), we get a palindrome (454989454).

The spelling of 102445253 in words is "one hundred two million, four hundred forty-five thousand, two hundred fifty-three".