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57042541 = 193002239
BaseRepresentation
bin1101100110011…
…0011001101101
310222100001122201
43121212121231
5104100330131
65354341501
71261565533
oct331463155
9128301581
1057042541
112a2209a6
121712a891
13ba82aaa
14780c153
15501b761
hex366666d

57042541 has 4 divisors (see below), whose sum is σ = 60044800. Its totient is φ = 54040284.

The previous prime is 57042539. The next prime is 57042569. The reversal of 57042541 is 14524075.

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 a cyclic number.

It is not a de Polignac number, because 57042541 - 21 = 57042539 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57049541) 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, 1501101 + ... + 1501138.

It is an arithmetic number, because the mean of its divisors is an integer number (15011200).

Almost surely, 257042541 is an apocalyptic number.

It is an amenable number.

57042541 is a deficient number, since it is larger than the sum of its proper divisors (3002259).

57042541 is a wasteful number, since it uses less digits than its factorization.

57042541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002258.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 57042541 is about 7552.6512563470. The cubic root of 57042541 is about 384.9458314750.

The spelling of 57042541 in words is "fifty-seven million, forty-two thousand, five hundred forty-one".

Divisors: 1 19 3002239 57042541