102553445 has 8 divisors (see below), whose sum is σ = 123702936. Its totient is φ = 81616896.

The previous prime is 102553417. The next prime is 102553447. The reversal of 102553445 is 544355201.

It can be written as a sum of positive squares in 4 ways, for example, as 3869089 + 98684356 = 1967^2 + 9934^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102553445 - 2¹⁶ = 102487909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102553447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52172 + ... + 54101.

It is an arithmetic number, because the mean of its divisors is an integer number (15462867).

Almost surely, 2^102553445 is an apocalyptic number.

It is an amenable number.

102553445 is a deficient number, since it is larger than the sum of its proper divisors (21149491).

102553445 is a wasteful number, since it uses less digits than its factorization.

102553445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106471.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 102553445 is about 10126.8674820993. The cubic root of 102553445 is about 468.0764068519.

The spelling of 102553445 in words is "one hundred two million, five hundred fifty-three thousand, four hundred forty-five".