102666522 has 16 divisors (see below), whose sum is σ = 234666432. Its totient is φ = 29333280.

The previous prime is 102666517. The next prime is 102666523. The reversal of 102666522 is 225666201.

It is a super-4 number, since 4×102666522⁴ (a number of 33 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102666522.

It is not an unprimeable number, because it can be changed into a prime (102666523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1222179 + ... + 1222262.

It is an arithmetic number, because the mean of its divisors is an integer number (14666652).

Almost surely, 2^102666522 is an apocalyptic number.

102666522 is an abundant number, since it is smaller than the sum of its proper divisors (131999910).

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

102666522 is a wasteful number, since it uses less digits than its factorization.

102666522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444453.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 102666522 is about 10132.4489636020. The cubic root of 102666522 is about 468.2483797338.

The spelling of 102666522 in words is "one hundred two million, six hundred sixty-six thousand, five hundred twenty-two".