555064921 has 2 divisors, whose sum is σ = 555064922. Its totient is φ = 555064920.

The previous prime is 555064897. The next prime is 555064931. The reversal of 555064921 is 129460555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 521482896 + 33582025 = 22836^2 + 5795^2 .

It is a cyclic number.

It is not a de Polignac number, because 555064921 - 2⁷ = 555064793 is a prime.

It is not a weakly prime, because it can be changed into another prime (555064931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277532460 + 277532461.

It is an arithmetic number, because the mean of its divisors is an integer number (277532461).

Almost surely, 2^555064921 is an apocalyptic number.

It is an amenable number.

555064921 is a deficient number, since it is larger than the sum of its proper divisors (1).

555064921 is an equidigital number, since it uses as much as digits as its factorization.

555064921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 555064921 is about 23559.8158099761. The cubic root of 555064921 is about 821.8286183949.

It can be divided in two parts, 555064 and 921, that added together give a triangular number (555985 = T₁₀₅₄).

The spelling of 555064921 in words is "five hundred fifty-five million, sixty-four thousand, nine hundred twenty-one".