121532055 has 8 divisors (see below), whose sum is σ = 194451312. Its totient is φ = 64817088.

The previous prime is 121532053. The next prime is 121532071. The reversal of 121532055 is 550235121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121532055 - 2¹ = 121532053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121532053) 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, 4051054 + ... + 4051083.

It is an arithmetic number, because the mean of its divisors is an integer number (24306414).

Almost surely, 2^121532055 is an apocalyptic number.

121532055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121532055 is a deficient number, since it is larger than the sum of its proper divisors (72919257).

121532055 is an equidigital number, since it uses as much as digits as its factorization.

121532055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8102145.

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

The square root of 121532055 is about 11024.1577909607. The cubic root of 121532055 is about 495.3326404088.

Adding to 121532055 its reverse (550235121), we get a palindrome (671767176).

The spelling of 121532055 in words is "one hundred twenty-one million, five hundred thirty-two thousand, fifty-five".