55730773 has 4 divisors (see below), whose sum is σ = 63692320. Its totient is φ = 47769228.

The previous prime is 55730747. The next prime is 55730791. The reversal of 55730773 is 37703755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37703755 = 5 ⋅7540751.

It is a cyclic number.

It is not a de Polignac number, because 55730773 - 2⁹ = 55730261 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 (55730273) 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, 3980763 + ... + 3980776.

It is an arithmetic number, because the mean of its divisors is an integer number (15923080).

Almost surely, 2^55730773 is an apocalyptic number.

It is an amenable number.

55730773 is a deficient number, since it is larger than the sum of its proper divisors (7961547).

55730773 is an equidigital number, since it uses as much as digits as its factorization.

55730773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7961546.

The product of its (nonzero) digits is 77175, while the sum is 37.

The square root of 55730773 is about 7465.3046153523. The cubic root of 55730773 is about 381.9721410017.

The spelling of 55730773 in words is "fifty-five million, seven hundred thirty thousand, seven hundred seventy-three".