102802545 has 12 divisors (see below), whose sum is σ = 178191156. Its totient is φ = 54828000.

The previous prime is 102802537. The next prime is 102802561. The reversal of 102802545 is 545208201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54819216 + 47983329 = 7404^2 + 6927^2 .

It is not a de Polignac number, because 102802545 - 2³ = 102802537 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1142206 + ... + 1142295.

It is an arithmetic number, because the mean of its divisors is an integer number (14849263).

Almost surely, 2^102802545 is an apocalyptic number.

102802545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102802545 is a deficient number, since it is larger than the sum of its proper divisors (75388611).

102802545 is a wasteful number, since it uses less digits than its factorization.

102802545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284512 (or 2284509 counting only the distinct ones).

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

The square root of 102802545 is about 10139.1589887919. The cubic root of 102802545 is about 468.4550827564.

The spelling of 102802545 in words is "one hundred two million, eight hundred two thousand, five hundred forty-five".