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57124949 = 79784131
BaseRepresentation
bin1101100111101…
…0100001010101
310222111020200212
43121322201111
5104110444244
65400215205
71262361020
oct331724125
9128436625
1057124949
112a277902
121716a505
13bab145b
1478301b7
155035d9e
hex367a855

57124949 has 8 divisors (see below), whose sum is σ = 65959488. Its totient is φ = 48458880.

The previous prime is 57124943. The next prime is 57124957. The reversal of 57124949 is 94942175.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-57124949 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57124943) 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, 41387 + ... + 42744.

It is an arithmetic number, because the mean of its divisors is an integer number (8244936).

Almost surely, 257124949 is an apocalyptic number.

It is an amenable number.

57124949 is a deficient number, since it is larger than the sum of its proper divisors (8834539).

57124949 is an equidigital number, since it uses as much as digits as its factorization.

57124949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84235.

The product of its digits is 90720, while the sum is 41.

The square root of 57124949 is about 7558.1048550546. The cubic root of 57124949 is about 385.1311163020.

The spelling of 57124949 in words is "fifty-seven million, one hundred twenty-four thousand, nine hundred forty-nine".

Divisors: 1 7 97 679 84131 588917 8160707 57124949