80547561 has 8 divisors (see below), whose sum is σ = 119329760. Its totient is φ = 53698356.

The previous prime is 80547559. The next prime is 80547563. The reversal of 80547561 is 16574508.

It is an interprime number because it is at equal distance from previous prime (80547559) and next prime (80547563).

It is not a de Polignac number, because 80547561 - 2¹ = 80547559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80547563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1491595 + ... + 1491648.

It is an arithmetic number, because the mean of its divisors is an integer number (14916220).

Almost surely, 2^80547561 is an apocalyptic number.

It is an amenable number.

80547561 is a deficient number, since it is larger than the sum of its proper divisors (38782199).

80547561 is a wasteful number, since it uses less digits than its factorization.

80547561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983252 (or 2983246 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 80547561 is about 8974.8293019979. The cubic root of 80547561 is about 431.8677739616.

The spelling of 80547561 in words is "eighty million, five hundred forty-seven thousand, five hundred sixty-one".