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557085187 = 1929320273
BaseRepresentation
bin100001001101000…
…111001000000011
31102211020212012201
4201031013020003
52120103211222
6131140134031
716543101031
oct4115071003
91384225181
10557085187
1126650738a
12136697317
138b551409
1453db5551
1533d92427
hex21347203

557085187 has 4 divisors (see below), whose sum is σ = 586405480. Its totient is φ = 527764896.

The previous prime is 557085181. The next prime is 557085197. The reversal of 557085187 is 781580755.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-557085187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557085181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14660118 + ... + 14660155.

It is an arithmetic number, because the mean of its divisors is an integer number (146601370).

Almost surely, 2557085187 is an apocalyptic number.

557085187 is a deficient number, since it is larger than the sum of its proper divisors (29320293).

557085187 is a wasteful number, since it uses less digits than its factorization.

557085187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29320292.

The product of its (nonzero) digits is 392000, while the sum is 46.

The square root of 557085187 is about 23602.6521179295. The cubic root of 557085187 is about 822.8244791633.

The spelling of 557085187 in words is "five hundred fifty-seven million, eighty-five thousand, one hundred eighty-seven".

Divisors: 1 19 29320273 557085187