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57472319 = 139941081
BaseRepresentation
bin1101101100111…
…1010100111111
311000010220012102
43123033110333
5104203103234
65411455315
71265335532
oct333172477
9130126172
1057472319
112a494893
12172b753b
13bba35b8
1478c0a19
1550a3c7e
hex36cf53f

57472319 has 4 divisors (see below), whose sum is σ = 57514800. Its totient is φ = 57429840.

The previous prime is 57472307. The next prime is 57472351. The reversal of 57472319 is 91327475.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57472319 - 224 = 40695103 is a prime.

It is a super-2 number, since 2×574723192 = 6606134902475522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57472379) 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, 19142 + ... + 21939.

It is an arithmetic number, because the mean of its divisors is an integer number (14378700).

Almost surely, 257472319 is an apocalyptic number.

57472319 is a deficient number, since it is larger than the sum of its proper divisors (42481).

57472319 is a wasteful number, since it uses less digits than its factorization.

57472319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42480.

The product of its digits is 52920, while the sum is 38.

The square root of 57472319 is about 7581.0499932397. The cubic root of 57472319 is about 385.9101847463.

The spelling of 57472319 in words is "fifty-seven million, four hundred seventy-two thousand, three hundred nineteen".

Divisors: 1 1399 41081 57472319