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57125039 = 1959131389
BaseRepresentation
bin1101100111101…
…0100010101111
310222111020211012
43121322202233
5104111000124
65400215435
71262361206
oct331724257
9128436735
1057125039
112a277984
121716a57b
13bab14ca
14783023d
155035e0e
hex367a8af

57125039 has 16 divisors (see below), whose sum is σ = 61776000. Its totient is φ = 52659360.

The previous prime is 57125023. The next prime is 57125051. The reversal of 57125039 is 93052175.

It is a cyclic number.

It is not a de Polignac number, because 57125039 - 24 = 57125023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57124996 and 57125014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57125009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146657 + ... + 147045.

It is an arithmetic number, because the mean of its divisors is an integer number (3861000).

Almost surely, 257125039 is an apocalyptic number.

57125039 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

57125039 is a deficient number, since it is larger than the sum of its proper divisors (4650961).

57125039 is a wasteful number, since it uses less digits than its factorization.

57125039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 57125039 is about 7558.1108089257. The cubic root of 57125039 is about 385.1313185591.

The spelling of 57125039 in words is "fifty-seven million, one hundred twenty-five thousand, thirty-nine".

Divisors: 1 19 59 131 389 1121 2489 7391 7729 22951 50959 146851 436069 968221 3006581 57125039