32497921 has 8 divisors (see below), whose sum is σ = 33065864. Its totient is φ = 31933440.

The previous prime is 32497891. The next prime is 32497937. The reversal of 32497921 is 12979423.

It can be written as a sum of positive squares in 4 ways, for example, as 9217296 + 23280625 = 3036^2 + 4825^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 32497921 - 2⁷ = 32497793 is a prime.

It is a super-2 number, since 2×32497921² = 2112229738644482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32497721) 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 7 ways as a sum of consecutive naturals, for example, 23941 + ... + 25261.

It is an arithmetic number, because the mean of its divisors is an integer number (4133233).

It is a Poulet number, since it divides 2^32497920-1.

Almost surely, 2^32497921 is an apocalyptic number.

It is an amenable number.

32497921 is a deficient number, since it is larger than the sum of its proper divisors (567943).

32497921 is a wasteful number, since it uses less digits than its factorization.

32497921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731.

The product of its digits is 27216, while the sum is 37.

The square root of 32497921 is about 5700.6947822173. The cubic root of 32497921 is about 319.1184100664.

It can be divided in two parts, 3249 and 7921, that multiplied together give a square (25735329 = 5073²).

The spelling of 32497921 in words is "thirty-two million, four hundred ninety-seven thousand, nine hundred twenty-one".