102051645 has 16 divisors (see below), whose sum is σ = 164133312. Its totient is φ = 54144000.

The previous prime is 102051643. The next prime is 102051671. The reversal of 102051645 is 546150201.

It is not a de Polignac number, because 102051645 - 2¹ = 102051643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102051643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14731 + ... + 20520.

It is an arithmetic number, because the mean of its divisors is an integer number (10258332).

Almost surely, 2^102051645 is an apocalyptic number.

102051645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102051645 is a deficient number, since it is larger than the sum of its proper divisors (62081667).

102051645 is a wasteful number, since it uses less digits than its factorization.

102051645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35452.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 102051645 is about 10102.0614232938. The cubic root of 102051645 is about 467.3117165293.

The spelling of 102051645 in words is "one hundred two million, fifty-one thousand, six hundred forty-five".