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57974047 = 163355669
BaseRepresentation
bin1101110100100…
…1110100011111
311001002101102221
43131021310133
5104320132142
65430330211
71302525355
oct335116437
9131071387
1057974047
112a7a783a
12174b9967
13c01aa91
1479b17d5
155152767
hex3749d1f

57974047 has 4 divisors (see below), whose sum is σ = 58329880. Its totient is φ = 57618216.

The previous prime is 57974023. The next prime is 57974051. The reversal of 57974047 is 74047975.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-57974047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57973994 and 57974012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57974017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177672 + ... + 177997.

It is an arithmetic number, because the mean of its divisors is an integer number (14582470).

Almost surely, 257974047 is an apocalyptic number.

57974047 is a deficient number, since it is larger than the sum of its proper divisors (355833).

57974047 is a wasteful number, since it uses less digits than its factorization.

57974047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355832.

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 57974047 is about 7614.0690172864. The cubic root of 57974047 is about 387.0299193217.

The spelling of 57974047 in words is "fifty-seven million, nine hundred seventy-four thousand, forty-seven".

Divisors: 1 163 355669 57974047