102052511 has 4 divisors (see below), whose sum is σ = 111330024. Its totient is φ = 92775000.

The previous prime is 102052499. The next prime is 102052519. The reversal of 102052511 is 115250201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102052511 - 2¹⁰ = 102051487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102052511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102052519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4638740 + ... + 4638761.

It is an arithmetic number, because the mean of its divisors is an integer number (27832506).

Almost surely, 2^102052511 is an apocalyptic number.

102052511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102052511 is a deficient number, since it is larger than the sum of its proper divisors (9277513).

102052511 is an equidigital number, since it uses as much as digits as its factorization.

102052511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9277512.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 102052511 is about 10102.1042857417. The cubic root of 102052511 is about 467.3130383790.

The spelling of 102052511 in words is "one hundred two million, fifty-two thousand, five hundred eleven".