65557122 has 8 divisors (see below), whose sum is σ = 131114256. Its totient is φ = 21852372.

The previous prime is 65557111. The next prime is 65557171. The reversal of 65557122 is 22175556.

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

65557122 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5463088 + ... + 5463099.

It is an arithmetic number, because the mean of its divisors is an integer number (16389282).

Almost surely, 2^65557122 is an apocalyptic number.

65557122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65557122 is a wasteful number, since it uses less digits than its factorization.

65557122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10926192.

The product of its digits is 21000, while the sum is 33.

The square root of 65557122 is about 8096.7352679954. The cubic root of 65557122 is about 403.2180452013.

The spelling of 65557122 in words is "sixty-five million, five hundred fifty-seven thousand, one hundred twenty-two".