55787449 has 8 divisors (see below), whose sum is σ = 57103488. Its totient is φ = 54476880.

The previous prime is 55787447. The next prime is 55787467. The reversal of 55787449 is 94478755.

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 55787449 - 2¹ = 55787447 is a prime.

It is a super-2 number, since 2×55787449² = 6224478931855202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55787441) 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 7 ways as a sum of consecutive naturals, for example, 25114 + ... + 27244.

It is an arithmetic number, because the mean of its divisors is an integer number (7137936).

Almost surely, 2^55787449 is an apocalyptic number.

It is an amenable number.

55787449 is a deficient number, since it is larger than the sum of its proper divisors (1316039).

55787449 is a wasteful number, since it uses less digits than its factorization.

55787449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2735.

The product of its digits is 1411200, while the sum is 49.

The square root of 55787449 is about 7469.0996110642. The cubic root of 55787449 is about 382.1015806717.

The spelling of 55787449 in words is "fifty-five million, seven hundred eighty-seven thousand, four hundred forty-nine".