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53531045 = 5173717021
BaseRepresentation
bin1100110000110…
…1000110100101
310201201122210022
43030031012211
5102200443140
65151204525
71220002121
oct314150645
9121648708
1053531045
1128242737
1215b16745
13b123699
147176581
154a760b5
hex330d1a5

53531045 has 16 divisors (see below), whose sum is σ = 69858288. Its totient is φ = 39214080.

The previous prime is 53531041. The next prime is 53531047. The reversal of 53531045 is 54013535.

It can be written as a sum of positive squares in 8 ways, for example, as 17698849 + 35832196 = 4207^2 + 5986^2 .

It is not a de Polignac number, because 53531045 - 22 = 53531041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53531041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5366 + ... + 11655.

It is an arithmetic number, because the mean of its divisors is an integer number (4366143).

Almost surely, 253531045 is an apocalyptic number.

It is an amenable number.

53531045 is a deficient number, since it is larger than the sum of its proper divisors (16327243).

53531045 is a wasteful number, since it uses less digits than its factorization.

53531045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17080.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 53531045 is about 7316.4913038970. The cubic root of 53531045 is about 376.8789724716.

The spelling of 53531045 in words is "fifty-three million, five hundred thirty-one thousand, forty-five".

Divisors: 1 5 17 37 85 185 629 3145 17021 85105 289357 629777 1446785 3148885 10706209 53531045