Search a number
-
+
57300981 = 323830449
BaseRepresentation
bin1101101010010…
…1011111110101
310222211012011120
43122211133311
5104132112411
65404054153
71264023153
oct332453765
9128735146
1057300981
112a388091
1217234359
13bb4360a
1478783d3
15506d106
hex36a57f5

57300981 has 8 divisors (see below), whose sum is σ = 79723200. Its totient is φ = 36539712.

The previous prime is 57300937. The next prime is 57301007. The reversal of 57300981 is 18900375.

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

It is not a de Polignac number, because 57300981 - 27 = 57300853 is a prime.

It is a super-2 number, since 2×573009812 = 6566804847124722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57300281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415156 + ... + 415293.

It is an arithmetic number, because the mean of its divisors is an integer number (9965400).

Almost surely, 257300981 is an apocalyptic number.

It is an amenable number.

57300981 is a deficient number, since it is larger than the sum of its proper divisors (22422219).

57300981 is a wasteful number, since it uses less digits than its factorization.

57300981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830475.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 57300981 is about 7569.7411448477. The cubic root of 57300981 is about 385.5263077963.

The spelling of 57300981 in words is "fifty-seven million, three hundred thousand, nine hundred eighty-one".

Divisors: 1 3 23 69 830449 2491347 19100327 57300981