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57130553 = 377612029
BaseRepresentation
bin1101100111101…
…1111000111001
310222111112101102
43121323320321
5104111134203
65400301145
71262413244
oct331737071
9128445342
1057130553
112a281037
12171717b5
13bab3b7c
14783225b
155037888
hex367be39

57130553 has 8 divisors (see below), whose sum is σ = 58780680. Its totient is φ = 55486080.

The previous prime is 57130547. The next prime is 57130559. The reversal of 57130553 is 35503175.

It is an interprime number because it is at equal distance from previous prime (57130547) and next prime (57130559).

It can be written as a sum of positive squares in 4 ways, for example, as 18292729 + 38837824 = 4277^2 + 6232^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57130553 - 24 = 57130537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57130559) 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 7 ways as a sum of consecutive naturals, for example, 27143 + ... + 29171.

It is an arithmetic number, because the mean of its divisors is an integer number (7347585).

Almost surely, 257130553 is an apocalyptic number.

It is an amenable number.

57130553 is a deficient number, since it is larger than the sum of its proper divisors (1650127).

57130553 is a wasteful number, since it uses less digits than its factorization.

57130553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827.

The product of its (nonzero) digits is 7875, while the sum is 29.

The square root of 57130553 is about 7558.4755738178. The cubic root of 57130553 is about 385.1437097732.

The spelling of 57130553 in words is "fifty-seven million, one hundred thirty thousand, five hundred fifty-three".

Divisors: 1 37 761 2029 28157 75073 1544069 57130553