55207749 has 8 divisors (see below), whose sum is σ = 77484640. Its totient is φ = 34868016.

The previous prime is 55207741. The next prime is 55207753. The reversal of 55207749 is 94770255.

55207749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55207749 - 2³ = 55207741 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 (55207741) 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 7 ways as a sum of consecutive naturals, for example, 484222 + ... + 484335.

It is an arithmetic number, because the mean of its divisors is an integer number (9685580).

Almost surely, 2^55207749 is an apocalyptic number.

It is an amenable number.

55207749 is a deficient number, since it is larger than the sum of its proper divisors (22276891).

55207749 is a wasteful number, since it uses less digits than its factorization.

55207749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968579.

The product of its (nonzero) digits is 88200, while the sum is 39.

The square root of 55207749 is about 7430.1917202721. The cubic root of 55207749 is about 380.7734684404.

The spelling of 55207749 in words is "fifty-five million, two hundred seven thousand, seven hundred forty-nine".