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57002889 = 319000963
BaseRepresentation
bin1101100101110…
…0101110001001
310222021001021010
43121130232021
5104043043024
65353434133
71261342116
oct331345611
9128231233
1057002889
112a1a4129
121710b949
13ba6aa28
1477db90d
15500eb29
hex365cb89

57002889 has 4 divisors (see below), whose sum is σ = 76003856. Its totient is φ = 38001924.

The previous prime is 57002867. The next prime is 57002899. The reversal of 57002889 is 98820075.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 57002889 - 27 = 57002761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57002849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9500479 + ... + 9500484.

It is an arithmetic number, because the mean of its divisors is an integer number (19000964).

Almost surely, 257002889 is an apocalyptic number.

It is an amenable number.

57002889 is a deficient number, since it is larger than the sum of its proper divisors (19000967).

57002889 is a wasteful number, since it uses less digits than its factorization.

57002889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19000966.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 57002889 is about 7550.0257615455. The cubic root of 57002889 is about 384.8566149592.

The spelling of 57002889 in words is "fifty-seven million, two thousand, eight hundred eighty-nine".

Divisors: 1 3 19000963 57002889