32161445 has 4 divisors (see below), whose sum is σ = 38593740. Its totient is φ = 25729152.

The previous prime is 32161427. The next prime is 32161483. The reversal of 32161445 is 54416123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54416123 = 3191 ⋅17053.

It can be written as a sum of positive squares in 2 ways, for example, as 18515809 + 13645636 = 4303^2 + 3694^2 .

It is a cyclic number.

It is not a de Polignac number, because 32161445 - 2⁸ = 32161189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3216140 + ... + 3216149.

It is an arithmetic number, because the mean of its divisors is an integer number (9648435).

Almost surely, 2^32161445 is an apocalyptic number.

It is an amenable number.

32161445 is a deficient number, since it is larger than the sum of its proper divisors (6432295).

32161445 is an equidigital number, since it uses as much as digits as its factorization.

32161445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6432294.

The product of its digits is 2880, while the sum is 26.

The square root of 32161445 is about 5671.1061531239. The cubic root of 32161445 is about 318.0132274339.

Adding to 32161445 its reverse (54416123), we get a palindrome (86577568).

The spelling of 32161445 in words is "thirty-two million, one hundred sixty-one thousand, four hundred forty-five".