55649707 has 4 divisors (see below), whose sum is σ = 55796920. Its totient is φ = 55502496.

The previous prime is 55649683. The next prime is 55649723. The reversal of 55649707 is 70794655.

55649707 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 a de Polignac number, because none of the positive numbers 2^k-55649707 is a prime.

It is a super-3 number, since 3×55649707³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55649747) 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, 73038 + ... + 73795.

It is an arithmetic number, because the mean of its divisors is an integer number (13949230).

Almost surely, 2^55649707 is an apocalyptic number.

55649707 is a deficient number, since it is larger than the sum of its proper divisors (147213).

55649707 is a wasteful number, since it uses less digits than its factorization.

55649707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147212.

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 55649707 is about 7459.8731222454. The cubic root of 55649707 is about 381.7868455300.

The spelling of 55649707 in words is "fifty-five million, six hundred forty-nine thousand, seven hundred seven".