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54553040 = 245681913
BaseRepresentation
bin1101000000011…
…0100111010000
310210122120200222
43100012213100
5102431144130
65225132212
71231456523
oct320064720
9123576628
1054553040
1128880563
121632a068
13b3c0909
147360bba
154bc8ce5
hex34069d0

54553040 has 20 divisors (see below), whose sum is σ = 126836004. Its totient is φ = 21821184.

The previous prime is 54553039. The next prime is 54553049. The reversal of 54553040 is 4035545.

It can be written as a sum of positive squares in 2 ways, for example, as 20866624 + 33686416 = 4568^2 + 5804^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54553049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340877 + ... + 341036.

Almost surely, 254553040 is an apocalyptic number.

It is an amenable number.

54553040 is an abundant number, since it is smaller than the sum of its proper divisors (72282964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54553040 is a wasteful number, since it uses less digits than its factorization.

54553040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681926 (or 681920 counting only the distinct ones).

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

The square root of 54553040 is about 7386.0029786076. The cubic root of 54553040 is about 379.2622806544.

Adding to 54553040 its reverse (4035545), we get a palindrome (58588585).

The spelling of 54553040 in words is "fifty-four million, five hundred fifty-three thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 681913 1363826 2727652 3409565 5455304 6819130 10910608 13638260 27276520 54553040