55506549 has 16 divisors (see below), whose sum is σ = 86868608. Its totient is φ = 30860352.

The previous prime is 55506487. The next prime is 55506569. The reversal of 55506549 is 94560555.

It is not a de Polignac number, because 55506549 - 2¹⁶ = 55441013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55506569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34942 + ... + 36495.

It is an arithmetic number, because the mean of its divisors is an integer number (5429288).

Almost surely, 2^55506549 is an apocalyptic number.

It is an amenable number.

55506549 is a deficient number, since it is larger than the sum of its proper divisors (31362059).

55506549 is a wasteful number, since it uses less digits than its factorization.

55506549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71484.

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 55506549 is about 7450.2717400106. The cubic root of 55506549 is about 381.4591841737.

The spelling of 55506549 in words is "fifty-five million, five hundred six thousand, five hundred forty-nine".