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82531355 = 516506271
BaseRepresentation
bin1001110101101…
…01010000011011
312202022000201212
410322311100123
5132112000410
612104533335
72021335124
oct472652033
9182260655
1082531355
1142650035
122378124b
131413862a
14ad6504b
1573a3b05
hex4eb541b

82531355 has 4 divisors (see below), whose sum is σ = 99037632. Its totient is φ = 66025080.

The previous prime is 82531321. The next prime is 82531357. The reversal of 82531355 is 55313528.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 82531355 - 216 = 82465819 is a prime.

It is a super-2 number, since 2×825313552 = 13622849116272050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82531357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8253131 + ... + 8253140.

It is an arithmetic number, because the mean of its divisors is an integer number (24759408).

Almost surely, 282531355 is an apocalyptic number.

82531355 is a deficient number, since it is larger than the sum of its proper divisors (16506277).

82531355 is a wasteful number, since it uses less digits than its factorization.

82531355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16506276.

The product of its digits is 18000, while the sum is 32.

The square root of 82531355 is about 9084.6769342668. The cubic root of 82531355 is about 435.3845280899.

The spelling of 82531355 in words is "eighty-two million, five hundred thirty-one thousand, three hundred fifty-five".

Divisors: 1 5 16506271 82531355