121535552 has 56 divisors (see below), whose sum is σ = 256946400. Its totient is φ = 56871936.

The previous prime is 121535551. The next prime is 121535569. The reversal of 121535552 is 255535121.

It is not an unprimeable number, because it can be changed into a prime (121535551) 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, 107663 + ... + 108785.

Almost surely, 2^121535552 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 121535552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128473200).

121535552 is an abundant number, since it is smaller than the sum of its proper divisors (135410848).

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

121535552 is a wasteful number, since it uses less digits than its factorization.

121535552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243 (or 1233 counting only the distinct ones).

The product of its digits is 7500, while the sum is 29.

The square root of 121535552 is about 11024.3163960402. The cubic root of 121535552 is about 495.3373913135.

The spelling of 121535552 in words is "one hundred twenty-one million, five hundred thirty-five thousand, five hundred fifty-two".