477553381 has 2 divisors, whose sum is σ = 477553382. Its totient is φ = 477553380.

The previous prime is 477553361. The next prime is 477553387. The reversal of 477553381 is 183355774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402644356 + 74909025 = 20066^2 + 8655^2 .

It is a cyclic number.

It is not a de Polignac number, because 477553381 - 2¹⁵ = 477520613 is a prime.

It is a super-2 number, since 2×477553381² = 456114463409062322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (477553387) 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 as a sum of consecutive naturals, namely, 238776690 + 238776691.

It is an arithmetic number, because the mean of its divisors is an integer number (238776691).

Almost surely, 2^477553381 is an apocalyptic number.

It is an amenable number.

477553381 is a deficient number, since it is larger than the sum of its proper divisors (1).

477553381 is an equidigital number, since it uses as much as digits as its factorization.

477553381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 43.

The square root of 477553381 is about 21852.9947833243. The cubic root of 477553381 is about 781.6409574657.

The spelling of 477553381 in words is "four hundred seventy-seven million, five hundred fifty-three thousand, three hundred eighty-one".