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57497011 = 11132157197
BaseRepresentation
bin1101101101010…
…1010110110011
311000012011001221
43123111112303
5104204401021
65412205511
71265500525
oct333252663
9130164057
1057497011
112a5013a0
1217309897
13bbb1900
1478c9a15
1550ab241
hex36d55b3

57497011 has 24 divisors (see below), whose sum is σ = 68699664. Its totient is φ = 47698560.

The previous prime is 57496991. The next prime is 57497071. The reversal of 57497011 is 11079475.

It is not a de Polignac number, because 57497011 - 25 = 57496979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57497071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 291765 + ... + 291961.

It is an arithmetic number, because the mean of its divisors is an integer number (2862486).

Almost surely, 257497011 is an apocalyptic number.

57497011 is a deficient number, since it is larger than the sum of its proper divisors (11202653).

57497011 is a wasteful number, since it uses less digits than its factorization.

57497011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 57497011 is about 7582.6783526667. The cubic root of 57497011 is about 385.9654434061.

The spelling of 57497011 in words is "fifty-seven million, four hundred ninety-seven thousand, eleven".

Divisors: 1 11 13 143 157 169 197 1727 1859 2041 2167 2561 22451 26533 28171 30929 33293 291863 340219 366223 402077 4422847 5227001 57497011