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57216841 = 1161711201
BaseRepresentation
bin1101101001000…
…0111101001001
310222122220202021
43122100331021
5104121414331
65402204441
71263222643
oct332207511
9128586667
1057216841
112a32a950
12171b3721
13bb14226
147855893
155053211
hex3690f49

57216841 has 16 divisors (see below), whose sum is σ = 64388736. Its totient is φ = 50400000.

The previous prime is 57216829. The next prime is 57216851. The reversal of 57216841 is 14861275.

57216841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 57216841 - 213 = 57208649 is a prime.

It is a Duffinian number.

57216841 is a Rhonda number in base 10.

Its product of digits (13440) is a multiple of the sum of its prime divisors (1344).

It is a junction number, because it is equal to n+sod(n) for n = 57216797 and 57216806.

It is not an unprimeable number, because it can be changed into a prime (57216811) 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, 47041 + ... + 48241.

It is an arithmetic number, because the mean of its divisors is an integer number (4024296).

Almost surely, 257216841 is an apocalyptic number.

It is an amenable number.

57216841 is a deficient number, since it is larger than the sum of its proper divisors (7171895).

57216841 is a wasteful number, since it uses less digits than its factorization.

57216841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344.

The product of its digits is 13440, while the sum is 34.

The square root of 57216841 is about 7564.1814494365. The cubic root of 57216841 is about 385.3375147879.

The spelling of 57216841 in words is "fifty-seven million, two hundred sixteen thousand, eight hundred forty-one".

Divisors: 1 11 61 71 671 781 1201 4331 13211 47641 73261 85271 805871 937981 5201531 57216841