32516991 has 16 divisors (see below), whose sum is σ = 51879520. Its totient is φ = 20010240.

The previous prime is 32516959. The next prime is 32517007. The reversal of 32516991 is 19961523.

It is not a de Polignac number, because 32516991 - 2⁵ = 32516959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32516941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45970 + ... + 46671.

It is an arithmetic number, because the mean of its divisors is an integer number (3242470).

Almost surely, 2^32516991 is an apocalyptic number.

32516991 is a deficient number, since it is larger than the sum of its proper divisors (19362529).

32516991 is a wasteful number, since it uses less digits than its factorization.

32516991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92663 (or 92657 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 32516991 is about 5702.3671400568. The cubic root of 32516991 is about 319.1808181418.

The spelling of 32516991 in words is "thirty-two million, five hundred sixteen thousand, nine hundred ninety-one".