55571549 has 12 divisors (see below), whose sum is σ = 62092380. Its totient is φ = 49684800.

The previous prime is 55571543. The next prime is 55571557. The reversal of 55571549 is 94517555.

It can be written as a sum of positive squares in 2 ways, for example, as 8305924 + 47265625 = 2882^2 + 6875^2 .

It is a de Polignac number, because none of the positive numbers 2^k-55571549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55571543) 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 11 ways as a sum of consecutive naturals, for example, 3617 + ... + 11145.

It is an arithmetic number, because the mean of its divisors is an integer number (5174365).

Almost surely, 2^55571549 is an apocalyptic number.

It is an amenable number.

55571549 is a deficient number, since it is larger than the sum of its proper divisors (6520831).

55571549 is a wasteful number, since it uses less digits than its factorization.

55571549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7612 (or 7601 counting only the distinct ones).

The product of its digits is 157500, while the sum is 41.

The square root of 55571549 is about 7454.6327206644. The cubic root of 55571549 is about 381.6080265186.

The spelling of 55571549 in words is "fifty-five million, five hundred seventy-one thousand, five hundred forty-nine".