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57253969 = 2319113033
BaseRepresentation
bin1101101001101…
…0000001010001
310222201210200101
43122122001101
5104124111334
65403052401
71263436123
oct332320121
9128653611
1057253969
112a355833
1217211101
13bb280b6
147865213
15505e214
hex369a051

57253969 has 8 divisors (see below), whose sum is σ = 60060672. Its totient is φ = 54473760.

The previous prime is 57253957. The next prime is 57253991. The reversal of 57253969 is 96935275.

It is a happy number.

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 57253969 - 29 = 57253457 is a prime.

It is a super-2 number, since 2×572539692 = 6556033932505922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57253919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2124 + ... + 10909.

It is an arithmetic number, because the mean of its divisors is an integer number (7507584).

Almost surely, 257253969 is an apocalyptic number.

It is an amenable number.

57253969 is a deficient number, since it is larger than the sum of its proper divisors (2806703).

57253969 is a wasteful number, since it uses less digits than its factorization.

57253969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13247.

The product of its digits is 510300, while the sum is 46.

The square root of 57253969 is about 7566.6352495677. The cubic root of 57253969 is about 385.4208452523.

The spelling of 57253969 in words is "fifty-seven million, two hundred fifty-three thousand, nine hundred sixty-nine".

Divisors: 1 23 191 4393 13033 299759 2489303 57253969