55329487 has 4 divisors (see below), whose sum is σ = 55346200. Its totient is φ = 55312776.

The previous prime is 55329473. The next prime is 55329523. The reversal of 55329487 is 78492355.

55329487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55329487 - 2⁷ = 55329359 is a prime.

It is a super-2 number, since 2×55329487² = 6122704263366338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55329427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533 + ... + 10630.

It is an arithmetic number, because the mean of its divisors is an integer number (13836550).

Almost surely, 2^55329487 is an apocalyptic number.

55329487 is a deficient number, since it is larger than the sum of its proper divisors (16713).

55329487 is a wasteful number, since it uses less digits than its factorization.

55329487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16712.

The product of its digits is 302400, while the sum is 43.

The square root of 55329487 is about 7438.3793261705. The cubic root of 55329487 is about 381.0531427676.

The spelling of 55329487 in words is "fifty-five million, three hundred twenty-nine thousand, four hundred eighty-seven".