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5557431 = 311832029
BaseRepresentation
bin10101001100110010110111
3101110100100210
4111030302313
52410314211
6315040503
765144265
oct25146267
911410323
105557431
113156420
121a40133
1311c7729
14a49435
1574b9a6
hex54ccb7

5557431 has 16 divisors (see below), whose sum is σ = 8184960. Its totient is φ = 3325920.

The previous prime is 5557411. The next prime is 5557439. The reversal of 5557431 is 1347555.

It is not a de Polignac number, because 5557431 - 25 = 5557399 is a prime.

It is a super-2 number, since 2×55574312 = 61770078639522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5557439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1725 + ... + 3753.

It is an arithmetic number, because the mean of its divisors is an integer number (511560).

Almost surely, 25557431 is an apocalyptic number.

5557431 is a deficient number, since it is larger than the sum of its proper divisors (2627529).

5557431 is a wasteful number, since it uses less digits than its factorization.

5557431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126.

The product of its digits is 10500, while the sum is 30.

The square root of 5557431 is about 2357.4204122303. The cubic root of 5557431 is about 177.1296888593.

Multiplying 5557431 by its sum of digits (30), we get a triangular number (166722930 = T18260).

The spelling of 5557431 in words is "five million, five hundred fifty-seven thousand, four hundred thirty-one".

Divisors: 1 3 11 33 83 249 913 2029 2739 6087 22319 66957 168407 505221 1852477 5557431