121480557 has 16 divisors (see below), whose sum is σ = 177876480. Its totient is φ = 73134000.

The previous prime is 121480553. The next prime is 121480577. The reversal of 121480557 is 755084121.

It is not a de Polignac number, because 121480557 - 2² = 121480553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121480553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7207 + ... + 17172.

It is an arithmetic number, because the mean of its divisors is an integer number (11117280).

Almost surely, 2^121480557 is an apocalyptic number.

It is an amenable number.

121480557 is a deficient number, since it is larger than the sum of its proper divisors (56395923).

121480557 is a wasteful number, since it uses less digits than its factorization.

121480557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24544.

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 121480557 is about 11021.8218548478. The cubic root of 121480557 is about 495.2626664304.

The spelling of 121480557 in words is "one hundred twenty-one million, four hundred eighty thousand, five hundred fifty-seven".