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557630079 = 3672774279
BaseRepresentation
bin100001001111001…
…100001001111111
31102212021112122220
4201033030021333
52120223130304
6131155540423
716550530446
oct4117141177
91385245586
10557630079
11266849806
121368ba713
138b6b2436
14540b7d5d
1533e4dad9
hex213cc27f

557630079 has 8 divisors (see below), whose sum is σ = 754604160. Its totient is φ = 366204696.

The previous prime is 557630057. The next prime is 557630081. The reversal of 557630079 is 970036755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 557630079 - 28 = 557629823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 557630079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557630089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1386939 + ... + 1387340.

It is an arithmetic number, because the mean of its divisors is an integer number (94325520).

Almost surely, 2557630079 is an apocalyptic number.

557630079 is a deficient number, since it is larger than the sum of its proper divisors (196974081).

557630079 is a wasteful number, since it uses less digits than its factorization.

557630079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774349.

The product of its (nonzero) digits is 198450, while the sum is 42.

The square root of 557630079 is about 23614.1923215680. The cubic root of 557630079 is about 823.0926633877.

The spelling of 557630079 in words is "five hundred fifty-seven million, six hundred thirty thousand, seventy-nine".

Divisors: 1 3 67 201 2774279 8322837 185876693 557630079