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57111022 = 2131217981
BaseRepresentation
bin1101100111011…
…1000111101110
310222110112121001
43121313013232
5104110023042
65400030514
71262302303
oct331670756
9128415531
1057111022
112a2683a1
121716243a
13baa8007
1478290aa
155031bb7
hex36771ee

57111022 has 8 divisors (see below), whose sum is σ = 86320872. Its totient is φ = 28337400.

The previous prime is 57111013. The next prime is 57111023. The reversal of 57111022 is 22011175.

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

It is a super-3 number, since 3×571110223 (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57111023) 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 in 3 ways as a sum of consecutive naturals, for example, 108729 + ... + 109252.

It is an arithmetic number, because the mean of its divisors is an integer number (10790109).

Almost surely, 257111022 is an apocalyptic number.

57111022 is a deficient number, since it is larger than the sum of its proper divisors (29209850).

57111022 is a wasteful number, since it uses less digits than its factorization.

57111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218114.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 57111022 is about 7557.1834700502. The cubic root of 57111022 is about 385.0998155767.

Adding to 57111022 its reverse (22011175), we get a palindrome (79122197).

The spelling of 57111022 in words is "fifty-seven million, one hundred eleven thousand, twenty-two".

Divisors: 1 2 131 262 217981 435962 28555511 57111022