55515245422 has 64 divisors (see below), whose sum is σ = 104061210624. Its totient is φ = 21626300160.

The previous prime is 55515245393. The next prime is 55515245449. The reversal of 55515245422 is 22454251555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9177603 + ... + 9183649.

It is an arithmetic number, because the mean of its divisors is an integer number (1625956416).

Almost surely, 2^55515245422 is an apocalyptic number.

55515245422 is a deficient number, since it is larger than the sum of its proper divisors (48545965202).

55515245422 is a wasteful number, since it uses less digits than its factorization.

55515245422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6833.

The product of its digits is 400000, while the sum is 40.

Adding to 55515245422 its reverse (22454251555), we get a palindrome (77969496977).

The spelling of 55515245422 in words is "fifty-five billion, five hundred fifteen million, two hundred forty-five thousand, four hundred twenty-two".