55572773 has 4 divisors (see below), whose sum is σ = 55588128. Its totient is φ = 55557420.

The previous prime is 55572763. The next prime is 55572791. The reversal of 55572773 is 37727555.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55572773 - 2¹⁶ = 55507237 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 55572773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55572703) 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, 1088 + ... + 10598.

It is an arithmetic number, because the mean of its divisors is an integer number (13897032).

Almost surely, 2^55572773 is an apocalyptic number.

It is an amenable number.

55572773 is a deficient number, since it is larger than the sum of its proper divisors (15355).

55572773 is an equidigital number, since it uses as much as digits as its factorization.

55572773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15354.

The product of its digits is 257250, while the sum is 41.

The square root of 55572773 is about 7454.7148168122. The cubic root of 55572773 is about 381.6108282208.

The spelling of 55572773 in words is "fifty-five million, five hundred seventy-two thousand, seven hundred seventy-three".