Search a number
-
+
57024769 = 191298559
BaseRepresentation
bin1101100110001…
…0000100000001
310222022011021111
43121202010001
5104044243034
65354123321
71261462654
oct331420401
9128264244
1057024769
112a20960a
1217120541
13ba77989
14780589b
155016364
hex3662101

57024769 has 4 divisors (see below), whose sum is σ = 57323520. Its totient is φ = 56726020.

The previous prime is 57024763. The next prime is 57024787. The reversal of 57024769 is 96742075.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57024769 - 27 = 57024641 is a prime.

It is a super-2 number, since 2×570247692 = 6503648559006722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57024763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149089 + ... + 149470.

It is an arithmetic number, because the mean of its divisors is an integer number (14330880).

Almost surely, 257024769 is an apocalyptic number.

It is an amenable number.

57024769 is a deficient number, since it is larger than the sum of its proper divisors (298751).

57024769 is a wasteful number, since it uses less digits than its factorization.

57024769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298750.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 57024769 is about 7551.4746242042. The cubic root of 57024769 is about 384.9058498063.

The spelling of 57024769 in words is "fifty-seven million, twenty-four thousand, seven hundred sixty-nine".

Divisors: 1 191 298559 57024769