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57454237 = 173978513
BaseRepresentation
bin1101101100101…
…0111010011101
311000002222101201
43123022322131
5104202013422
65411235501
71265232031
oct333127235
9130088351
1057454237
112a482245
12172a8b91
13bb982b9
1478b81c1
15509d727
hex36cae9d

57454237 has 8 divisors (see below), whose sum is σ = 60994296. Its totient is φ = 53932032.

The previous prime is 57454231. The next prime is 57454261. The reversal of 57454237 is 73245475.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 37687321 + 19766916 = 6139^2 + 4446^2 .

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 57454237 - 27 = 57454109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57454196 and 57454205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57454231) 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, 2493 + ... + 11005.

It is an arithmetic number, because the mean of its divisors is an integer number (7624287).

Almost surely, 257454237 is an apocalyptic number.

It is an amenable number.

57454237 is a deficient number, since it is larger than the sum of its proper divisors (3540059).

57454237 is a wasteful number, since it uses less digits than its factorization.

57454237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8927.

The product of its digits is 117600, while the sum is 37.

The square root of 57454237 is about 7579.8573205569. The cubic root of 57454237 is about 385.8697086817.

The spelling of 57454237 in words is "fifty-seven million, four hundred fifty-four thousand, two hundred thirty-seven".

Divisors: 1 17 397 6749 8513 144721 3379661 57454237