55162245721 has 8 divisors (see below), whose sum is σ = 60197759424. Its totient is φ = 50130192720.

The previous prime is 55162245683. The next prime is 55162245763. The reversal of 55162245721 is 12754226155.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 55162245721 - 2²⁹ = 54625374809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55162245221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831786 + ... + 895651.

It is an arithmetic number, because the mean of its divisors is an integer number (7524719928).

Almost surely, 2^55162245721 is an apocalyptic number.

It is an amenable number.

55162245721 is a deficient number, since it is larger than the sum of its proper divisors (5035513703).

55162245721 is a wasteful number, since it uses less digits than its factorization.

55162245721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730351.

The product of its digits is 168000, while the sum is 40.

The spelling of 55162245721 in words is "fifty-five billion, one hundred sixty-two million, two hundred forty-five thousand, seven hundred twenty-one".