121503525 has 48 divisors (see below), whose sum is σ = 236026560. Its totient is φ = 54374400.

The previous prime is 121503517. The next prime is 121503527. The reversal of 121503525 is 525305121.

It is a happy number.

It is not a de Polignac number, because 121503525 - 2³ = 121503517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121503495 and 121503504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121503527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5061 + ... + 16389.

It is an arithmetic number, because the mean of its divisors is an integer number (4917220).

Almost surely, 2^121503525 is an apocalyptic number.

121503525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121503525 is a deficient number, since it is larger than the sum of its proper divisors (114523035).

121503525 is a wasteful number, since it uses less digits than its factorization.

121503525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11366 (or 11361 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 121503525 is about 11022.8637386117. The cubic root of 121503525 is about 495.2938771206.

Adding to 121503525 its reverse (525305121), we get a palindrome (646808646).

The spelling of 121503525 in words is "one hundred twenty-one million, five hundred three thousand, five hundred twenty-five".