132802561 has 4 divisors (see below), whose sum is σ = 133272112. Its totient is φ = 132333012.

The previous prime is 132802559. The next prime is 132802597. The reversal of 132802561 is 165208231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 165208231 = 5449 ⋅30319.

It is a cyclic number.

It is not a de Polignac number, because 132802561 - 2¹ = 132802559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132802511) 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, 234351 + ... + 234916.

It is an arithmetic number, because the mean of its divisors is an integer number (33318028).

Almost surely, 2^132802561 is an apocalyptic number.

It is an amenable number.

132802561 is a deficient number, since it is larger than the sum of its proper divisors (469551).

132802561 is an equidigital number, since it uses as much as digits as its factorization.

132802561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469550.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 132802561 is about 11523.9993491843. Note that the first 3 decimals coincide. The cubic root of 132802561 is about 510.1941603414.

The spelling of 132802561 in words is "one hundred thirty-two million, eight hundred two thousand, five hundred sixty-one".