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57254131 = 1147591877
BaseRepresentation
bin1101101001101…
…0000011110011
310222201210220101
43122122003303
5104124113011
65403053231
71263436444
oct332320363
9128653811
1057254131
112a355970
1217211217
13bb281ac
1478652cb
15505e2c1
hex369a0f3

57254131 has 16 divisors (see below), whose sum is σ = 64903680. Its totient is φ = 50051680.

The previous prime is 57254111. The next prime is 57254143. The reversal of 57254131 is 13145275.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-57254131 is a prime.

It is a super-2 number, since 2×572541312 = 6556071033130322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57254131.

It is not an unprimeable number, because it can be changed into a prime (57254111) 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, 29565 + ... + 31441.

It is an arithmetic number, because the mean of its divisors is an integer number (4056480).

Almost surely, 257254131 is an apocalyptic number.

57254131 is a deficient number, since it is larger than the sum of its proper divisors (7649549).

57254131 is a wasteful number, since it uses less digits than its factorization.

57254131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994.

The product of its digits is 4200, while the sum is 28.

The square root of 57254131 is about 7566.6459544504. The cubic root of 57254131 is about 385.4212087678.

The spelling of 57254131 in words is "fifty-seven million, two hundred fifty-four thousand, one hundred thirty-one".

Divisors: 1 11 47 59 517 649 1877 2773 20647 30503 88219 110743 970409 1218173 5204921 57254131