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57204514561 = 232778978891
BaseRepresentation
bin110101010001101001…
…111001111100000001
312110122200101102122111
4311101221321330001
51414123323431221
642140203135321
74063403231245
oct652151717401
9173580342574
1057204514561
1122295503517
12b105814541
135518550aac
142aa94c6425
15174c10abe1
hexd51a79f01

57204514561 has 8 divisors (see below), whose sum is σ = 59907167424. Its totient is φ = 54519820080.

The previous prime is 57204514559. The next prime is 57204514573. The reversal of 57204514561 is 16541540275.

57204514561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 57204514561 - 21 = 57204514559 is a prime.

It is a super-2 number, since 2×572045145612 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57204517561) 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, 4483075 + ... + 4495816.

It is an arithmetic number, because the mean of its divisors is an integer number (7488395928).

Almost surely, 257204514561 is an apocalyptic number.

It is an amenable number.

57204514561 is a deficient number, since it is larger than the sum of its proper divisors (2702652863).

57204514561 is a wasteful number, since it uses less digits than its factorization.

57204514561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8979191.

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 57204514561 in words is "fifty-seven billion, two hundred four million, five hundred fourteen thousand, five hundred sixty-one".

Divisors: 1 23 277 6371 8978891 206514493 2487152807 57204514561