121523255 has 24 divisors (see below), whose sum is σ = 172257696. Its totient is φ = 80619840.

The previous prime is 121523243. The next prime is 121523273. The reversal of 121523255 is 552325121.

It is not a de Polignac number, because 121523255 - 2⁴ = 121523239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31829 + ... + 35441.

It is an arithmetic number, because the mean of its divisors is an integer number (7177404).

Almost surely, 2^121523255 is an apocalyptic number.

121523255 is a deficient number, since it is larger than the sum of its proper divisors (50734441).

121523255 is an equidigital number, since it uses as much as digits as its factorization.

121523255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687 (or 3656 counting only the distinct ones).

The product of its digits is 3000, while the sum is 26.

The square root of 121523255 is about 11023.7586602755. The cubic root of 121523255 is about 495.3206846263.

Adding to 121523255 its reverse (552325121), we get a palindrome (673848376).

The spelling of 121523255 in words is "one hundred twenty-one million, five hundred twenty-three thousand, two hundred fifty-five".