55415162881 has 8 divisors (see below), whose sum is σ = 59706740520. Its totient is φ = 51127709952.

The previous prime is 55415162867. The next prime is 55415162909. The reversal of 55415162881 is 18826151455.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3929283856 + 51485879025 = 62684^2 + 226905^2 .

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 55415162881 - 2⁷ = 55415162753 is a prime.

It is a super-2 number, since 2×55415162881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55415162081) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1003240 + ... + 1057033.

It is an arithmetic number, because the mean of its divisors is an integer number (7463342565).

Almost surely, 2^55415162881 is an apocalyptic number.

It is an amenable number.

55415162881 is a deficient number, since it is larger than the sum of its proper divisors (4291577639).

55415162881 is a wasteful number, since it uses less digits than its factorization.

55415162881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062355.

The product of its digits is 384000, while the sum is 46.

The spelling of 55415162881 in words is "fifty-five billion, four hundred fifteen million, one hundred sixty-two thousand, eight hundred eighty-one".