32455561 has 4 divisors (see below), whose sum is σ = 32758992. Its totient is φ = 32152132.

The previous prime is 32455531. The next prime is 32455571. The reversal of 32455561 is 16555423.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16555423 = 23 ⋅719801.

It is a cyclic number.

It is not a de Polignac number, because 32455561 - 2⁷ = 32455433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32455531) 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, 151555 + ... + 151768.

It is an arithmetic number, because the mean of its divisors is an integer number (8189748).

Almost surely, 2^32455561 is an apocalyptic number.

It is an amenable number.

32455561 is a deficient number, since it is larger than the sum of its proper divisors (303431).

32455561 is a wasteful number, since it uses less digits than its factorization.

32455561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303430.

The product of its digits is 18000, while the sum is 31.

The square root of 32455561 is about 5696.9782341167. The cubic root of 32455561 is about 318.9796962343.

The spelling of 32455561 in words is "thirty-two million, four hundred fifty-five thousand, five hundred sixty-one".