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57554142 = 2323218133
BaseRepresentation
bin1101101110001…
…1010011011110
311000022001102220
43123203103132
5104213213032
65413330210
71266126222
oct333432336
9130261386
1057554142
112a540308
1217336966
13bc01909
147902782
1550bd12c
hex36e34de

57554142 has 24 divisors (see below), whose sum is σ = 120337224. Its totient is φ = 18349584.

The previous prime is 57554137. The next prime is 57554153. The reversal of 57554142 is 24145575.

It is a super-2 number, since 2×575541422 = 6624958522712328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5893 + ... + 12240.

It is an arithmetic number, because the mean of its divisors is an integer number (5014051).

Almost surely, 257554142 is an apocalyptic number.

57554142 is an abundant number, since it is smaller than the sum of its proper divisors (62783082).

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

57554142 is a wasteful number, since it uses less digits than its factorization.

57554142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18184 (or 18161 counting only the distinct ones).

The product of its digits is 28000, while the sum is 33.

The square root of 57554142 is about 7586.4446218238. Note that the first 3 decimals coincide. The cubic root of 57554142 is about 386.0932372513.

The spelling of 57554142 in words is "fifty-seven million, five hundred fifty-four thousand, one hundred forty-two".

Divisors: 1 2 3 6 23 46 69 138 529 1058 1587 3174 18133 36266 54399 108798 417059 834118 1251177 2502354 9592357 19184714 28777071 57554142