487557173 has 2 divisors, whose sum is σ = 487557174. Its totient is φ = 487557172.

The previous prime is 487557131. The next prime is 487557221. The reversal of 487557173 is 371755784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 300606244 + 186950929 = 17338^2 + 13673^2 .

It is a cyclic number.

It is not a de Polignac number, because 487557173 - 2²⁴ = 470779957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487551173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243778586 + 243778587.

It is an arithmetic number, because the mean of its divisors is an integer number (243778587).

Almost surely, 2^487557173 is an apocalyptic number.

It is an amenable number.

487557173 is a deficient number, since it is larger than the sum of its proper divisors (1).

487557173 is an equidigital number, since it uses as much as digits as its factorization.

487557173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 823200, while the sum is 47.

The square root of 487557173 is about 22080.6968413590. The cubic root of 487557173 is about 787.0612242189.

The spelling of 487557173 in words is "four hundred eighty-seven million, five hundred fifty-seven thousand, one hundred seventy-three".