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80031541 = 658112161
BaseRepresentation
bin1001100010100…
…10111100110101
312120121000122011
410301102330311
5130442002131
611535204221
71661154052
oct461227465
9176530564
1080031541
11411a2977
1222976671
1313771855
14a8b4029
15705d0b1
hex4c52f35

80031541 has 4 divisors (see below), whose sum is σ = 80050284. Its totient is φ = 80012800.

The previous prime is 80031517. The next prime is 80031547. The reversal of 80031541 is 14513008.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18957316 + 61074225 = 4354^2 + 7815^2 .

It is a cyclic number.

It is not a de Polignac number, because 80031541 - 25 = 80031509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80031547) 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, 501 + ... + 12661.

It is an arithmetic number, because the mean of its divisors is an integer number (20012571).

Almost surely, 280031541 is an apocalyptic number.

It is an amenable number.

80031541 is a deficient number, since it is larger than the sum of its proper divisors (18743).

80031541 is a wasteful number, since it uses less digits than its factorization.

80031541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18742.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 80031541 is about 8946.0349317449. The cubic root of 80031541 is about 430.9435580864.

Adding to 80031541 its reverse (14513008), we get a palindrome (94544549).

The spelling of 80031541 in words is "eighty million, thirty-one thousand, five hundred forty-one".

Divisors: 1 6581 12161 80031541