102566540 has 12 divisors (see below), whose sum is σ = 215389776. Its totient is φ = 41026608.

The previous prime is 102566509. The next prime is 102566561. The reversal of 102566540 is 45665201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2564144 + ... + 2564183.

It is an arithmetic number, because the mean of its divisors is an integer number (17949148).

Almost surely, 2^102566540 is an apocalyptic number.

102566540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102566540 is an abundant number, since it is smaller than the sum of its proper divisors (112823236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102566540 is a wasteful number, since it uses less digits than its factorization.

102566540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128336 (or 5128334 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 102566540 is about 10127.5140088770. The cubic root of 102566540 is about 468.0963288210.

The spelling of 102566540 in words is "one hundred two million, five hundred sixty-six thousand, five hundred forty".