102209453 has 2 divisors, whose sum is σ = 102209454. Its totient is φ = 102209452.

The previous prime is 102209431. The next prime is 102209461. The reversal of 102209453 is 354902201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79959364 + 22250089 = 8942^2 + 4717^2 .

It is a cyclic number.

It is not a de Polignac number, because 102209453 - 2¹⁶ = 102143917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102209053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51104726 + 51104727.

It is an arithmetic number, because the mean of its divisors is an integer number (51104727).

Almost surely, 2^102209453 is an apocalyptic number.

It is an amenable number.

102209453 is a deficient number, since it is larger than the sum of its proper divisors (1).

102209453 is an equidigital number, since it uses as much as digits as its factorization.

102209453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 102209453 is about 10109.8690891623. The cubic root of 102209453 is about 467.5524689697.

The spelling of 102209453 in words is "one hundred two million, two hundred nine thousand, four hundred fifty-three".