102353021 has 2 divisors, whose sum is σ = 102353022. Its totient is φ = 102353020.

The previous prime is 102353011. The next prime is 102353087. The reversal of 102353021 is 120353201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102292996 + 60025 = 10114^2 + 245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102353021 is a prime.

It is a super-2 number, since 2×102353021² = 20952281815652882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102353011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51176510 + 51176511.

It is an arithmetic number, because the mean of its divisors is an integer number (51176511).

Almost surely, 2^102353021 is an apocalyptic number.

It is an amenable number.

102353021 is a deficient number, since it is larger than the sum of its proper divisors (1).

102353021 is an equidigital number, since it uses as much as digits as its factorization.

102353021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 102353021 is about 10116.9669862069. The cubic root of 102353021 is about 467.7712816340.

Adding to 102353021 its product of nonzero digits (180), we get a palindrome (102353201).

The spelling of 102353021 in words is "one hundred two million, three hundred fifty-three thousand, twenty-one".