132621555 has 32 divisors (see below), whose sum is σ = 232098048. Its totient is φ = 64131200.

The previous prime is 132621551. The next prime is 132621563. The reversal of 132621555 is 555126231.

It is a happy number.

It is not a de Polignac number, because 132621555 - 2² = 132621551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (132621551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80197 + ... + 81833.

It is an arithmetic number, because the mean of its divisors is an integer number (7253064).

Almost surely, 2^132621555 is an apocalyptic number.

132621555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

132621555 is a deficient number, since it is larger than the sum of its proper divisors (99476493).

132621555 is a wasteful number, since it uses less digits than its factorization.

132621555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147.

The product of its digits is 9000, while the sum is 30.

The square root of 132621555 is about 11516.1432346077. The cubic root of 132621555 is about 509.9622617212.

Adding to 132621555 its reverse (555126231), we get a palindrome (687747786).

The spelling of 132621555 in words is "one hundred thirty-two million, six hundred twenty-one thousand, five hundred fifty-five".