121525533 has 6 divisors (see below), whose sum is σ = 175536894. Its totient is φ = 81017016.

The previous prime is 121525499. The next prime is 121525543. The reversal of 121525533 is 335525121.

It is a happy number.

121525533 is a `hidden beast` number, since 121 + 5 + 2 + 5 + 533 = 666.

It can be written as a sum of positive squares in only one way, i.e., 76003524 + 45522009 = 8718^2 + 6747^2 .

It is not a de Polignac number, because 121525533 - 2⁹ = 121525021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121525497 and 121525506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121525543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6751410 + ... + 6751427.

It is an arithmetic number, because the mean of its divisors is an integer number (29256149).

Almost surely, 2^121525533 is an apocalyptic number.

It is an amenable number.

121525533 is a deficient number, since it is larger than the sum of its proper divisors (54011361).

121525533 is a wasteful number, since it uses less digits than its factorization.

121525533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13502843 (or 13502840 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 121525533 is about 11023.8619820823. The cubic root of 121525533 is about 495.3237795990.

The spelling of 121525533 in words is "one hundred twenty-one million, five hundred twenty-five thousand, five hundred thirty-three".