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57301745 = 553216233
BaseRepresentation
bin1101101010010…
…1101011110001
310222211020012212
43122211223301
5104132123440
65404101505
71264025324
oct332455361
9128736185
1057301745
112a388716
1217234895
13bb43a77
1478787bb
15506d465
hex36a5af1

57301745 has 8 divisors (see below), whose sum is σ = 70059816. Its totient is φ = 44976256.

The previous prime is 57301721. The next prime is 57301759. The reversal of 57301745 is 54710375.

It can be written as a sum of positive squares in 4 ways, for example, as 5216656 + 52085089 = 2284^2 + 7217^2 .

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 57301745 - 222 = 53107441 is a prime.

It is a super-3 number, since 3×573017453 (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107852 + ... + 108381.

It is an arithmetic number, because the mean of its divisors is an integer number (8757477).

Almost surely, 257301745 is an apocalyptic number.

It is an amenable number.

57301745 is a deficient number, since it is larger than the sum of its proper divisors (12758071).

57301745 is a wasteful number, since it uses less digits than its factorization.

57301745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216291.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 57301745 is about 7569.7916087565. The cubic root of 57301745 is about 385.5280212096.

The spelling of 57301745 in words is "fifty-seven million, three hundred one thousand, seven hundred forty-five".

Divisors: 1 5 53 265 216233 1081165 11460349 57301745