55722065 has 16 divisors (see below), whose sum is σ = 77980800. Its totient is φ = 38208240.

The previous prime is 55722061. The next prime is 55722067. The reversal of 55722065 is 56022755.

It is not a de Polignac number, because 55722065 - 2² = 55722061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55722061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14531 + ... + 17960.

It is an arithmetic number, because the mean of its divisors is an integer number (4873800).

Almost surely, 2^55722065 is an apocalyptic number.

It is an amenable number.

55722065 is a deficient number, since it is larger than the sum of its proper divisors (22258735).

55722065 is an equidigital number, since it uses as much as digits as its factorization.

55722065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32517 (or 32503 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 55722065 is about 7464.7213611762. The cubic root of 55722065 is about 381.9522454306.

It can be divided in two parts, 557 and 22065, that added together give a palindrome (22622).

The spelling of 55722065 in words is "fifty-five million, seven hundred twenty-two thousand, sixty-five".