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57497312 = 2531149389
BaseRepresentation
bin1101101101010…
…1011011100000
311000012011111002
43123111123200
5104204403222
65412211132
71265501435
oct333253340
9130164432
1057497312
112a501644
1217309aa8
13bbb1aa2
1478c9b8c
1550ab392
hex36d56e0

57497312 has 48 divisors (see below), whose sum is σ = 117936000. Its totient is φ = 27563520.

The previous prime is 57497299. The next prime is 57497317. The reversal of 57497312 is 21379475.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57497317) 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, 147614 + ... + 148002.

It is an arithmetic number, because the mean of its divisors is an integer number (2457000).

Almost surely, 257497312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57497312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58968000).

57497312 is an abundant number, since it is smaller than the sum of its proper divisors (60438688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57497312 is a wasteful number, since it uses less digits than its factorization.

57497312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 571 counting only the distinct ones).

The product of its digits is 52920, while the sum is 38.

The square root of 57497312 is about 7582.6982005088. The cubic root of 57497312 is about 385.9661169217.

The spelling of 57497312 in words is "fifty-seven million, four hundred ninety-seven thousand, three hundred twelve".

Divisors: 1 2 4 8 16 31 32 62 124 149 248 298 389 496 596 778 992 1192 1556 2384 3112 4619 4768 6224 9238 12059 12448 18476 24118 36952 48236 57961 73904 96472 115922 147808 192944 231844 385888 463688 927376 1796791 1854752 3593582 7187164 14374328 28748656 57497312