102500045 has 8 divisors (see below), whose sum is σ = 123065880. Its totient is φ = 81956160.

The previous prime is 102500023. The next prime is 102500077. The reversal of 102500045 is 540005201.

It can be written as a sum of positive squares in 4 ways, for example, as 4351396 + 98148649 = 2086^2 + 9907^2 .

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

It is not a de Polignac number, because 102500045 - 2¹² = 102495949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102499996 and 102500032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7655 + ... + 16235.

It is an arithmetic number, because the mean of its divisors is an integer number (15383235).

Almost surely, 2^102500045 is an apocalyptic number.

It is an amenable number.

102500045 is a deficient number, since it is larger than the sum of its proper divisors (20565835).

102500045 is an equidigital number, since it uses as much as digits as its factorization.

102500045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10975.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 102500045 is about 10124.2305880496. The cubic root of 102500045 is about 467.9951496441.

Adding to 102500045 its reverse (540005201), we get a palindrome (642505246).

The spelling of 102500045 in words is "one hundred two million, five hundred thousand, forty-five".