554377921 has 2 divisors, whose sum is σ = 554377922. Its totient is φ = 554377920.

The previous prime is 554377913. The next prime is 554377931. The reversal of 554377921 is 129773455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 522579600 + 31798321 = 22860^2 + 5639^2 .

It is a cyclic number.

It is not a de Polignac number, because 554377921 - 2³ = 554377913 is a prime.

It is not a weakly prime, because it can be changed into another prime (554377931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277188960 + 277188961.

It is an arithmetic number, because the mean of its divisors is an integer number (277188961).

Almost surely, 2^554377921 is an apocalyptic number.

It is an amenable number.

554377921 is a deficient number, since it is larger than the sum of its proper divisors (1).

554377921 is an equidigital number, since it uses as much as digits as its factorization.

554377921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 43.

The square root of 554377921 is about 23545.2313855694. The cubic root of 554377921 is about 821.4894212235.

The spelling of 554377921 in words is "five hundred fifty-four million, three hundred seventy-seven thousand, nine hundred twenty-one".