55037747 has 4 divisors (see below), whose sum is σ = 55247280. Its totient is φ = 54828216.

The previous prime is 55037743. The next prime is 55037761. The reversal of 55037747 is 74773055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55037747 - 2² = 55037743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55037747.

It is not an unprimeable number, because it can be changed into a prime (55037743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104372 + ... + 104897.

It is an arithmetic number, because the mean of its divisors is an integer number (13811820).

Almost surely, 2^55037747 is an apocalyptic number.

55037747 is a deficient number, since it is larger than the sum of its proper divisors (209533).

55037747 is a wasteful number, since it uses less digits than its factorization.

55037747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209532.

The product of its (nonzero) digits is 102900, while the sum is 38.

The square root of 55037747 is about 7418.7429528189. The cubic root of 55037747 is about 380.3822262090.

The spelling of 55037747 in words is "fifty-five million, thirty-seven thousand, seven hundred forty-seven".