32454721 has 4 divisors (see below), whose sum is σ = 34951252. Its totient is φ = 29958192.

The previous prime is 32454713. The next prime is 32454727. The reversal of 32454721 is 12745423.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6076225 + 26378496 = 2465^2 + 5136^2 .

It is a cyclic number.

It is not a de Polignac number, because 32454721 - 2³ = 32454713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32454721.

It is not an unprimeable number, because it can be changed into a prime (32454727) 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 3 ways as a sum of consecutive naturals, for example, 1248246 + ... + 1248271.

It is an arithmetic number, because the mean of its divisors is an integer number (8737813).

Almost surely, 2^32454721 is an apocalyptic number.

It is an amenable number.

32454721 is a deficient number, since it is larger than the sum of its proper divisors (2496531).

32454721 is a wasteful number, since it uses less digits than its factorization.

32454721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496530.

The product of its digits is 6720, while the sum is 28.

The square root of 32454721 is about 5696.9045103459. The cubic root of 32454721 is about 318.9769443150.

The spelling of 32454721 in words is "thirty-two million, four hundred fifty-four thousand, seven hundred twenty-one".