121552164 has 60 divisors (see below), whose sum is σ = 320166000. Its totient is φ = 40210992.

The previous prime is 121552157. The next prime is 121552181. The reversal of 121552164 is 461255121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 43687 + ... + 46385.

It is an arithmetic number, because the mean of its divisors is an integer number (5336100).

Almost surely, 2^121552164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121552164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160083000).

121552164 is an abundant number, since it is smaller than the sum of its proper divisors (198613836).

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

121552164 is a wasteful number, since it uses less digits than its factorization.

121552164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854 (or 2843 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 121552164 is about 11025.0697956974. The cubic root of 121552164 is about 495.3599585643.

The spelling of 121552164 in words is "one hundred twenty-one million, five hundred fifty-two thousand, one hundred sixty-four".