Search a number
-
+
57033487 = 7171094397
BaseRepresentation
bin1101100110010…
…0001100001111
310222022121020101
43121210030033
5104100032422
65354231531
71261530250
oct331441417
9128277211
1057033487
112a215115
12171255a7
13ba7b934
147808b27
155018c27
hex366430f

57033487 has 16 divisors (see below), whose sum is σ = 69664320. Its totient is φ = 45577728.

The previous prime is 57033479. The next prime is 57033499. The reversal of 57033487 is 78433075.

57033487 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 57033487 - 23 = 57033479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57033407) 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, 10773 + ... + 15169.

It is an arithmetic number, because the mean of its divisors is an integer number (4354020).

Almost surely, 257033487 is an apocalyptic number.

57033487 is a deficient number, since it is larger than the sum of its proper divisors (12630833).

57033487 is a wasteful number, since it uses less digits than its factorization.

57033487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4530.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 57033487 is about 7552.0518403941. The cubic root of 57033487 is about 384.9254637289.

The spelling of 57033487 in words is "fifty-seven million, thirty-three thousand, four hundred eighty-seven".

Divisors: 1 7 17 109 119 763 1853 4397 12971 30779 74749 479273 523243 3354911 8147641 57033487