[go: up one dir, main page]

Search a number
-
+
57560381 is a prime number
BaseRepresentation
bin1101101110010…
…0110100111101
311000022100222222
43123210310331
5104213413011
65413415125
71266153344
oct333446475
9130270888
1057560381
112a544a6a
121733a4a5
13bc046c8
147904b5b
1550beddb
hex36e4d3d

57560381 has 2 divisors, whose sum is σ = 57560382. Its totient is φ = 57560380.

The previous prime is 57560369. The next prime is 57560401. The reversal of 57560381 is 18306575.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50537881 + 7022500 = 7109^2 + 2650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-57560381 is a prime.

It is a super-2 number, since 2×575603812 = 6626394921730322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57560081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28780190 + 28780191.

It is an arithmetic number, because the mean of its divisors is an integer number (28780191).

Almost surely, 257560381 is an apocalyptic number.

It is an amenable number.

57560381 is a deficient number, since it is larger than the sum of its proper divisors (1).

57560381 is an equidigital number, since it uses as much as digits as its factorization.

57560381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 57560381 is about 7586.8558046137. The cubic root of 57560381 is about 386.1071878758.

The spelling of 57560381 in words is "fifty-seven million, five hundred sixty thousand, three hundred eighty-one".