55803649 has 8 divisors (see below), whose sum is σ = 61468992. Its totient is φ = 50237040.

The previous prime is 55803641. The next prime is 55803661. The reversal of 55803649 is 94630855.

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 55803649 - 2³ = 55803641 is a prime.

It is a super-2 number, since 2×55803649² = 6228094483430402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55803641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23494 + ... + 25759.

It is an arithmetic number, because the mean of its divisors is an integer number (7683624).

Almost surely, 2^55803649 is an apocalyptic number.

It is an amenable number.

55803649 is a deficient number, since it is larger than the sum of its proper divisors (5665343).

55803649 is a wasteful number, since it uses less digits than its factorization.

55803649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49367.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 55803649 is about 7470.1840004112. The cubic root of 55803649 is about 382.1385629837.

It can be divided in two parts, 5580 and 3649, that added together give a palindrome (9229).

The spelling of 55803649 in words is "fifty-five million, eight hundred three thousand, six hundred forty-nine".