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57274897 = 83690059
BaseRepresentation
bin1101101001111…
…1001000010001
310222202212101111
43122133020101
5104130244042
65403333321
71263554131
oct332371021
9128685344
1057274897
112a36a529
1217221241
13bb34794
14786cac1
155065517
hex369f211

57274897 has 4 divisors (see below), whose sum is σ = 57965040. Its totient is φ = 56584756.

The previous prime is 57274891. The next prime is 57274907. The reversal of 57274897 is 79847275.

57274897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57274897 - 211 = 57272849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57274897.

It is not an unprimeable number, because it can be changed into a prime (57274891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344947 + ... + 345112.

It is an arithmetic number, because the mean of its divisors is an integer number (14491260).

Almost surely, 257274897 is an apocalyptic number.

It is an amenable number.

57274897 is a deficient number, since it is larger than the sum of its proper divisors (690143).

57274897 is an equidigital number, since it uses as much as digits as its factorization.

57274897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690142.

The product of its digits is 987840, while the sum is 49.

The square root of 57274897 is about 7568.0180364479. The cubic root of 57274897 is about 385.4678003950.

The spelling of 57274897 in words is "fifty-seven million, two hundred seventy-four thousand, eight hundred ninety-seven".

Divisors: 1 83 690059 57274897