55145122 has 16 divisors (see below), whose sum is σ = 87946560. Its totient is φ = 25874992.

The previous prime is 55145071. The next prime is 55145137. The reversal of 55145122 is 22154155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8872 + ... + 13747.

It is an arithmetic number, because the mean of its divisors is an integer number (5496660).

Almost surely, 2^55145122 is an apocalyptic number.

55145122 is a deficient number, since it is larger than the sum of its proper divisors (32801438).

55145122 is a wasteful number, since it uses less digits than its factorization.

55145122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22697.

The product of its digits is 2000, while the sum is 25.

The square root of 55145122 is about 7425.9761647880. The cubic root of 55145122 is about 380.6294323629.

Adding to 55145122 its reverse (22154155), we get a palindrome (77299277).

The spelling of 55145122 in words is "fifty-five million, one hundred forty-five thousand, one hundred twenty-two".