80061561 has 32 divisors (see below), whose sum is σ = 125475840. Its totient is φ = 50371200.

The previous prime is 80061533. The next prime is 80061577. The reversal of 80061561 is 16516008.

It is not a de Polignac number, because 80061561 - 2⁵ = 80061529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (80061511) 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 31 ways as a sum of consecutive naturals, for example, 33151 + ... + 35483.

It is an arithmetic number, because the mean of its divisors is an integer number (3921120).

Almost surely, 2^80061561 is an apocalyptic number.

It is an amenable number.

80061561 is a deficient number, since it is larger than the sum of its proper divisors (45414279).

80061561 is a wasteful number, since it uses less digits than its factorization.

80061561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414 (or 2408 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 80061561 is about 8947.7126127296. The cubic root of 80061561 is about 430.9974339635.

Adding to 80061561 its reverse (16516008), we get a palindrome (96577569).

The spelling of 80061561 in words is "eighty million, sixty-one thousand, five hundred sixty-one".