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57006231 = 359931723
BaseRepresentation
bin1101100101110…
…1100010010111
310222021012211220
43121131202113
5104043144411
65353501423
71261354632
oct331354227
9128235756
1057006231
112a1a6697
1217111873
13ba6c3c9
1477dcc19
155010b06
hex365d897

57006231 has 8 divisors (see below), whose sum is σ = 76137600. Its totient is φ = 37939512.

The previous prime is 57006197. The next prime is 57006239. The reversal of 57006231 is 13260075.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57006231 - 211 = 57004183 is a prime.

It is a super-2 number, since 2×570062312 = 6499420745650722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57006239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14065 + ... + 17658.

It is an arithmetic number, because the mean of its divisors is an integer number (9517200).

Almost surely, 257006231 is an apocalyptic number.

57006231 is a deficient number, since it is larger than the sum of its proper divisors (19131369).

57006231 is a wasteful number, since it uses less digits than its factorization.

57006231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32325.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 57006231 is about 7550.2470820497. The cubic root of 57006231 is about 384.8641360147.

The spelling of 57006231 in words is "fifty-seven million, six thousand, two hundred thirty-one".

Divisors: 1 3 599 1797 31723 95169 19002077 57006231