121552477 has 4 divisors (see below), whose sum is σ = 121806720. Its totient is φ = 121298236.

The previous prime is 121552471. The next prime is 121552489. The reversal of 121552477 is 774255121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121552477 - 2¹⁹ = 121028189 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 (121552471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126403 + ... + 127360.

It is an arithmetic number, because the mean of its divisors is an integer number (30451680).

Almost surely, 2^121552477 is an apocalyptic number.

It is an amenable number.

121552477 is a deficient number, since it is larger than the sum of its proper divisors (254243).

121552477 is an equidigital number, since it uses as much as digits as its factorization.

121552477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254242.

The product of its digits is 19600, while the sum is 34.

The square root of 121552477 is about 11025.0839906098. The cubic root of 121552477 is about 495.3603837522.

The spelling of 121552477 in words is "one hundred twenty-one million, five hundred fifty-two thousand, four hundred seventy-seven".