Search a number
-
+
57292081 = 7112925657
BaseRepresentation
bin1101101010001…
…1010100110001
310222210201221221
43122203110301
5104131321311
65403545041
71263655210
oct332432461
9128721857
1057292081
112a381430
121722b181
13bb3c552
147875077
15506a671
hex36a3531

57292081 has 16 divisors (see below), whose sum is σ = 73895040. Its totient is φ = 43102080.

The previous prime is 57292069. The next prime is 57292097. The reversal of 57292081 is 18029275.

57292081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57292081 - 217 = 57161009 is a prime.

It is a super-2 number, since 2×572920812 = 6564765090621122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57292051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10596 + ... + 15061.

It is an arithmetic number, because the mean of its divisors is an integer number (4618440).

Almost surely, 257292081 is an apocalyptic number.

It is an amenable number.

57292081 is a deficient number, since it is larger than the sum of its proper divisors (16602959).

57292081 is a wasteful number, since it uses less digits than its factorization.

57292081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25704.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 57292081 is about 7569.1532551534. The cubic root of 57292081 is about 385.5063467547.

The spelling of 57292081 in words is "fifty-seven million, two hundred ninety-two thousand, eighty-one".

Divisors: 1 7 11 29 77 203 319 2233 25657 179599 282227 744053 1975589 5208371 8184583 57292081