121684552 has 16 divisors (see below), whose sum is σ = 248900400. Its totient is φ = 55311120.

The previous prime is 121684547. The next prime is 121684561. The reversal of 121684552 is 255486121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691302 + ... + 691477.

It is an arithmetic number, because the mean of its divisors is an integer number (15556275).

Almost surely, 2^121684552 is an apocalyptic number.

It is an amenable number.

121684552 is an abundant number, since it is smaller than the sum of its proper divisors (127215848).

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

121684552 is a wasteful number, since it uses less digits than its factorization.

121684552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382796 (or 1382792 counting only the distinct ones).

The product of its digits is 19200, while the sum is 34.

The square root of 121684552 is about 11031.0721147131. The cubic root of 121684552 is about 495.5397330134.

The spelling of 121684552 in words is "one hundred twenty-one million, six hundred eighty-four thousand, five hundred fifty-two".