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57401243 = 318272239
BaseRepresentation
bin1101101011110…
…1111110011011
311000000021200222
43122331332123
5104143314433
65410150255
71264621364
oct332757633
9130007628
1057401243
112a446449
121728238b
13bb7a143
1478a2b6b
15508cb98
hex36bdf9b

57401243 has 8 divisors (see below), whose sum is σ = 59351040. Its totient is φ = 55457640.

The previous prime is 57401233. The next prime is 57401257. The reversal of 57401243 is 34210475.

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 57401243 - 222 = 53206939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57401213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24518 + ... + 26756.

It is an arithmetic number, because the mean of its divisors is an integer number (7418880).

Almost surely, 257401243 is an apocalyptic number.

57401243 is a deficient number, since it is larger than the sum of its proper divisors (1949797).

57401243 is a wasteful number, since it uses less digits than its factorization.

57401243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 57401243 is about 7576.3608018626. The cubic root of 57401243 is about 385.7510341171.

The spelling of 57401243 in words is "fifty-seven million, four hundred one thousand, two hundred forty-three".

Divisors: 1 31 827 2239 25637 69409 1851653 57401243