55330547 has 4 divisors (see below), whose sum is σ = 55346496. Its totient is φ = 55314600.

The previous prime is 55330531. The next prime is 55330549. The reversal of 55330547 is 74503355.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55330547 - 2⁴ = 55330531 is a prime.

It is a super-2 number, since 2×55330547² = 6122938862638418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55330549) 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, 323 + ... + 10524.

It is an arithmetic number, because the mean of its divisors is an integer number (13836624).

Almost surely, 2^55330547 is an apocalyptic number.

55330547 is a deficient number, since it is larger than the sum of its proper divisors (15949).

55330547 is a wasteful number, since it uses less digits than its factorization.

55330547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15948.

The product of its (nonzero) digits is 31500, while the sum is 32.

The square root of 55330547 is about 7438.4505779094. The cubic root of 55330547 is about 381.0555761521.

The spelling of 55330547 in words is "fifty-five million, three hundred thirty thousand, five hundred forty-seven".