33125987 has 4 divisors (see below), whose sum is σ = 34869480. Its totient is φ = 31382496.

The previous prime is 33125977. The next prime is 33125993. The reversal of 33125987 is 78952133.

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

It is a cyclic number.

It is not a de Polignac number, because 33125987 - 2⁶ = 33125923 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 33125987.

It is not an unprimeable number, because it can be changed into a prime (33125947) 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, 871718 + ... + 871755.

It is an arithmetic number, because the mean of its divisors is an integer number (8717370).

Almost surely, 2^33125987 is an apocalyptic number.

33125987 is a deficient number, since it is larger than the sum of its proper divisors (1743493).

33125987 is a wasteful number, since it uses less digits than its factorization.

33125987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743492.

The product of its digits is 45360, while the sum is 38.

The square root of 33125987 is about 5755.5179610527. The cubic root of 33125987 is about 321.1611041611.

The spelling of 33125987 in words is "thirty-three million, one hundred twenty-five thousand, nine hundred eighty-seven".