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54405053 = 157346529
BaseRepresentation
bin1100111110001…
…0011110111101
310210101001200222
43033202132331
5102411430203
65222031125
71230302213
oct317423675
9123331628
1054405053
112878a35a
12162784a5
13b36b451
147322cb3
154b9a038
hex33e27bd

54405053 has 4 divisors (see below), whose sum is σ = 54751740. Its totient is φ = 54058368.

The previous prime is 54405041. The next prime is 54405067. The reversal of 54405053 is 35050445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35050445 = 57010089.

It can be written as a sum of positive squares in 2 ways, for example, as 22448644 + 31956409 = 4738^2 + 5653^2 .

It is a cyclic number.

It is not a de Polignac number, because 54405053 - 26 = 54404989 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 (54405353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173108 + ... + 173421.

It is an arithmetic number, because the mean of its divisors is an integer number (13687935).

Almost surely, 254405053 is an apocalyptic number.

It is an amenable number.

54405053 is a deficient number, since it is larger than the sum of its proper divisors (346687).

54405053 is a wasteful number, since it uses less digits than its factorization.

54405053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346686.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 54405053 is about 7375.9781046313. The cubic root of 54405053 is about 378.9190262425.

Adding to 54405053 its reverse (35050445), we get a palindrome (89455498).

The spelling of 54405053 in words is "fifty-four million, four hundred five thousand, fifty-three".

Divisors: 1 157 346529 54405053