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57378461 = 721961631
BaseRepresentation
bin1101101011100…
…0011010011101
310222222010110012
43122320122131
5104142102321
65405453005
71264465100
oct332703235
9128863405
1057378461
112a430318
1217271165
13bb6c96a
147898737
15508605b
hex36b869d

57378461 has 12 divisors (see below), whose sum is σ = 70260480. Its totient is φ = 46592280.

The previous prime is 57378449. The next prime is 57378463. The reversal of 57378461 is 16487375.

It is not a de Polignac number, because 57378461 - 26 = 57378397 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57378463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29885 + ... + 31746.

It is an arithmetic number, because the mean of its divisors is an integer number (5855040).

Almost surely, 257378461 is an apocalyptic number.

It is an amenable number.

57378461 is a deficient number, since it is larger than the sum of its proper divisors (12882019).

57378461 is a wasteful number, since it uses less digits than its factorization.

57378461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61664 (or 61657 counting only the distinct ones).

The product of its digits is 141120, while the sum is 41.

The square root of 57378461 is about 7574.8571603694. The cubic root of 57378461 is about 385.6999937418.

The spelling of 57378461 in words is "fifty-seven million, three hundred seventy-eight thousand, four hundred sixty-one".

Divisors: 1 7 19 49 133 931 61631 431417 1170989 3019919 8196923 57378461