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57401371 = 149338447
BaseRepresentation
bin1101101011111…
…0000000011011
311000000021212201
43122332000123
5104143320441
65410151031
71264621636
oct332760033
9130007781
1057401371
112a446555
1217282477
13bb7a211
1478a2c1d
15508cc31
hex36be01b

57401371 has 4 divisors (see below), whose sum is σ = 57441312. Its totient is φ = 57361432.

The previous prime is 57401363. The next prime is 57401381. The reversal of 57401371 is 17310475.

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

It is a cyclic number.

It is not a de Polignac number, because 57401371 - 23 = 57401363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57401341) 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, 17731 + ... + 20716.

It is an arithmetic number, because the mean of its divisors is an integer number (14360328).

Almost surely, 257401371 is an apocalyptic number.

57401371 is a deficient number, since it is larger than the sum of its proper divisors (39941).

57401371 is a wasteful number, since it uses less digits than its factorization.

57401371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39940.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 57401371 is about 7576.3692491853. The cubic root of 57401371 is about 385.7513208478.

The spelling of 57401371 in words is "fifty-seven million, four hundred one thousand, three hundred seventy-one".

Divisors: 1 1493 38447 57401371