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57078901 = 1137592377
BaseRepresentation
bin1101100110111…
…1010001110101
310222101220112101
43121233101311
5104103011101
65355222101
71262106535
oct331572165
9128356471
1057078901
112a246250
1217147931
13ba964c9
14781b4c5
155027401
hex366f475

57078901 has 16 divisors (see below), whose sum is σ = 65062080. Its totient is φ = 49610880.

The previous prime is 57078887. The next prime is 57078913. The reversal of 57078901 is 10987075.

It is not a de Polignac number, because 57078901 - 211 = 57076853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57078941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22825 + ... + 25201.

It is an arithmetic number, because the mean of its divisors is an integer number (4066380).

Almost surely, 257078901 is an apocalyptic number.

It is an amenable number.

57078901 is a deficient number, since it is larger than the sum of its proper divisors (7983179).

57078901 is a wasteful number, since it uses less digits than its factorization.

57078901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 57078901 is about 7555.0579746287. The cubic root of 57078901 is about 385.0276046997.

The spelling of 57078901 in words is "fifty-seven million, seventy-eight thousand, nine hundred one".

Divisors: 1 11 37 59 407 649 2183 2377 24013 26147 87949 140243 967439 1542673 5188991 57078901