121553797 has 8 divisors (see below), whose sum is σ = 125539200. Its totient is φ = 117626784.

The previous prime is 121553771. The next prime is 121553801. The reversal of 121553797 is 797355121.

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

It is a cyclic number.

It is not a de Polignac number, because 121553797 - 2⁷ = 121553669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121553717) 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, 10347 + ... + 18712.

It is an arithmetic number, because the mean of its divisors is an integer number (15692400).

Almost surely, 2^121553797 is an apocalyptic number.

It is an amenable number.

121553797 is a deficient number, since it is larger than the sum of its proper divisors (3985403).

121553797 is an equidigital number, since it uses as much as digits as its factorization.

121553797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29195.

The product of its digits is 66150, while the sum is 40.

The square root of 121553797 is about 11025.1438539368. The cubic root of 121553797 is about 495.3621768690.

The spelling of 121553797 in words is "one hundred twenty-one million, five hundred fifty-three thousand, seven hundred ninety-seven".