121549853 has 8 divisors (see below), whose sum is σ = 127599360. Its totient is φ = 115633440.

The previous prime is 121549837. The next prime is 121549867. The reversal of 121549853 is 358945121.

It is a happy number.

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 121549853 - 2⁴ = 121549837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121549873) 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, 31400 + ... + 35057.

It is an arithmetic number, because the mean of its divisors is an integer number (15949920).

Almost surely, 2^121549853 is an apocalyptic number.

It is an amenable number.

121549853 is a deficient number, since it is larger than the sum of its proper divisors (6049507).

121549853 is an equidigital number, since it uses as much as digits as its factorization.

121549853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66547.

The product of its digits is 43200, while the sum is 38.

The square root of 121549853 is about 11024.9649886065. The cubic root of 121549853 is about 495.3568192150.

The spelling of 121549853 in words is "one hundred twenty-one million, five hundred forty-nine thousand, eight hundred fifty-three".