55532091 has 8 divisors (see below), whose sum is σ = 74319120. Its totient is φ = 36883232.

The previous prime is 55532077. The next prime is 55532101. The reversal of 55532091 is 19023555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55532091 - 2⁹ = 55531579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55532291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33600 + ... + 35213.

It is an arithmetic number, because the mean of its divisors is an integer number (9289890).

Almost surely, 2^55532091 is an apocalyptic number.

55532091 is a deficient number, since it is larger than the sum of its proper divisors (18787029).

55532091 is a wasteful number, since it uses less digits than its factorization.

55532091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69085.

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 55532091 is about 7451.9857085209. The cubic root of 55532091 is about 381.5176861976.

The spelling of 55532091 in words is "fifty-five million, five hundred thirty-two thousand, ninety-one".