102052845 has 32 divisors (see below), whose sum is σ = 186339840. Its totient is φ = 52954560.

The previous prime is 102052843. The next prime is 102052849. The reversal of 102052845 is 548250201.

It is a happy number.

It is not a de Polignac number, because 102052845 - 2¹ = 102052843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102052843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5221 + ... + 15210.

It is an arithmetic number, because the mean of its divisors is an integer number (5823120).

Almost surely, 2^102052845 is an apocalyptic number.

102052845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102052845 is a deficient number, since it is larger than the sum of its proper divisors (84286995).

102052845 is a wasteful number, since it uses less digits than its factorization.

102052845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20482 (or 20476 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 102052845 is about 10102.1208169374. The cubic root of 102052845 is about 467.3135481897.

The spelling of 102052845 in words is "one hundred two million, fifty-two thousand, eight hundred forty-five".