55543091 has 8 divisors (see below), whose sum is σ = 59957280. Its totient is φ = 51295552.

The previous prime is 55543051. The next prime is 55543093. The reversal of 55543091 is 19034555.

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 55543091 - 2¹⁸ = 55280947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55543093) 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, 40970 + ... + 42303.

It is an arithmetic number, because the mean of its divisors is an integer number (7494660).

Almost surely, 2^55543091 is an apocalyptic number.

55543091 is a deficient number, since it is larger than the sum of its proper divisors (4414189).

55543091 is a wasteful number, since it uses less digits than its factorization.

55543091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83325.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 55543091 is about 7452.7237302881. The cubic root of 55543091 is about 381.5428753415.

The spelling of 55543091 in words is "fifty-five million, five hundred forty-three thousand, ninety-one".