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2575431 = 321915061
BaseRepresentation
bin1001110100110001000111
311211211211100
421310301013
51124403211
6131111143
730614355
oct11646107
94754740
102575431
1114a9a61
12a424b3
136c2331
144b07d5
1535d156
hex274c47

2575431 has 12 divisors (see below), whose sum is σ = 3916120. Its totient is φ = 1626480.

The previous prime is 2575421. The next prime is 2575439. The reversal of 2575431 is 1345752.

It is a happy number.

2575431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2575431 - 211 = 2573383 is a prime.

It is a super-2 number, since 2×25754312 = 13265689671522, which contains 22 as substring.

It is a Duffinian number.

2575431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2575395 and 2575404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2575439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7360 + ... + 7701.

22575431 is an apocalyptic number.

2575431 is a deficient number, since it is larger than the sum of its proper divisors (1340689).

2575431 is a wasteful number, since it uses less digits than its factorization.

2575431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15086 (or 15083 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 2575431 is about 1604.8149426024. The cubic root of 2575431 is about 137.0723861346.

The spelling of 2575431 in words is "two million, five hundred seventy-five thousand, four hundred thirty-one".

Divisors: 1 3 9 19 57 171 15061 45183 135549 286159 858477 2575431