32661552 has 80 divisors (see below), whose sum is σ = 105207552. Its totient is φ = 8482560.

The previous prime is 32661547. The next prime is 32661557. The reversal of 32661552 is 25516623.

It is an interprime number because it is at equal distance from previous prime (32661547) and next prime (32661557).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32661557) 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, 723 + ... + 8114.

Almost surely, 2^32661552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32661552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52603776).

32661552 is an abundant number, since it is smaller than the sum of its proper divisors (72546000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

32661552 is a wasteful number, since it uses less digits than its factorization.

32661552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8866 (or 8860 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 32661552 is about 5715.0286088523. The cubic root of 32661552 is about 319.6531136876.

Subtracting from 32661552 its reverse (25516623), we obtain a square (7144929 = 2673²).

The spelling of 32661552 in words is "thirty-two million, six hundred sixty-one thousand, five hundred fifty-two".