555150121 has 4 divisors (see below), whose sum is σ = 560540032. Its totient is φ = 549760212.

The previous prime is 555150119. The next prime is 555150163. The reversal of 555150121 is 121051555.

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 555150121 - 2¹ = 555150119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (555153121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2694801 + ... + 2695006.

It is an arithmetic number, because the mean of its divisors is an integer number (140135008).

Almost surely, 2^555150121 is an apocalyptic number.

It is an amenable number.

555150121 is a deficient number, since it is larger than the sum of its proper divisors (5389911).

555150121 is a wasteful number, since it uses less digits than its factorization.

555150121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5389910.

The product of its (nonzero) digits is 1250, while the sum is 25.

The square root of 555150121 is about 23561.6239041370. The cubic root of 555150121 is about 821.8706652578.

The spelling of 555150121 in words is "five hundred fifty-five million, one hundred fifty thousand, one hundred twenty-one".