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57051012 = 22326318077
BaseRepresentation
bin1101100110100…
…0011110000100
310222100111021110
43121220132010
5104101113022
65354445020
71261632324
oct331503604
9128314243
1057051012
112a2272a7
1217133770
13ba868c5
147811284
15501e00c
hex3668784

57051012 has 24 divisors (see below), whose sum is σ = 133632576. Its totient is φ = 18943648.

The previous prime is 57050989. The next prime is 57051013. The reversal of 57051012 is 21015075.

It is a self number, because there is not a number n which added to its sum of digits gives 57051012.

It is not an unprimeable number, because it can be changed into a prime (57051013) 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, 5883 + ... + 12194.

It is an arithmetic number, because the mean of its divisors is an integer number (5568024).

Almost surely, 257051012 is an apocalyptic number.

It is an amenable number.

57051012 is an abundant number, since it is smaller than the sum of its proper divisors (76581564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57051012 is a wasteful number, since it uses less digits than its factorization.

57051012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18347 (or 18345 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 57051012 is about 7553.2120319769. The cubic root of 57051012 is about 384.9648857613.

Adding to 57051012 its reverse (21015075), we get a palindrome (78066087).

The spelling of 57051012 in words is "fifty-seven million, fifty-one thousand, twelve".

Divisors: 1 2 3 4 6 12 263 526 789 1052 1578 3156 18077 36154 54231 72308 108462 216924 4754251 9508502 14262753 19017004 28525506 57051012