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45318561 = 3291733011
BaseRepresentation
bin1010110011100…
…0000110100001
310011021102101020
42230320012201
543100143221
64255200053
71060126041
oct254700641
9104242336
1045318561
1123643562
1213216029
139509622
146039721
153ea2ac6
hex2b381a1

45318561 has 16 divisors (see below), whose sum is σ = 62890560. Its totient is φ = 28992320.

The previous prime is 45318541. The next prime is 45318569. The reversal of 45318561 is 16581354.

It is a 2-Lehmer number, since φ(45318561) divides (45318561-1)2.

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 45318561 - 27 = 45318433 is a prime.

It is a super-2 number, since 2×453185612 = 4107543942221442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45318569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13546 + ... + 16556.

It is an arithmetic number, because the mean of its divisors is an integer number (3930660).

It is a Poulet number, since it divides 245318560-1.

Almost surely, 245318561 is an apocalyptic number.

It is an amenable number.

45318561 is a deficient number, since it is larger than the sum of its proper divisors (17571999).

45318561 is a wasteful number, since it uses less digits than its factorization.

45318561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216.

The product of its digits is 14400, while the sum is 33.

The square root of 45318561 is about 6731.9061936423. The cubic root of 45318561 is about 356.5266817045.

The spelling of 45318561 in words is "forty-five million, three hundred eighteen thousand, five hundred sixty-one".

Divisors: 1 3 29 87 173 519 3011 5017 9033 15051 87319 261957 520903 1562709 15106187 45318561