32172461 has 4 divisors (see below), whose sum is σ = 32184672. Its totient is φ = 32160252.

The previous prime is 32172457. The next prime is 32172463. The reversal of 32172461 is 16427123.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16427123 = 2909 ⋅5647.

It is a cyclic number.

It is not a de Polignac number, because 32172461 - 2² = 32172457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 32172461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32172463) 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, 335 + ... + 8028.

It is an arithmetic number, because the mean of its divisors is an integer number (8046168).

Almost surely, 2^32172461 is an apocalyptic number.

It is an amenable number.

32172461 is a deficient number, since it is larger than the sum of its proper divisors (12211).

32172461 is an equidigital number, since it uses as much as digits as its factorization.

32172461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12210.

The product of its digits is 2016, while the sum is 26.

The square root of 32172461 is about 5672.0773090641. The cubic root of 32172461 is about 318.0495321233.

Adding to 32172461 its reverse (16427123), we get a palindrome (48599584).

The spelling of 32172461 in words is "thirty-two million, one hundred seventy-two thousand, four hundred sixty-one".