55511533444 has 6 divisors (see below), whose sum is σ = 97145183534. Its totient is φ = 27755766720.

The previous prime is 55511533439. The next prime is 55511533453. The reversal of 55511533444 is 44433511555.

It can be written as a sum of positive squares in only one way, i.e., 32081108544 + 23430424900 = 179112^2 + 153070^2 .

It is a super-2 number, since 2×55511533444² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55511533397 and 55511533406.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6938941677 + ... + 6938941684.

Almost surely, 2^55511533444 is an apocalyptic number.

It is an amenable number.

55511533444 is a deficient number, since it is larger than the sum of its proper divisors (41633650090).

55511533444 is a wasteful number, since it uses less digits than its factorization.

55511533444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13877883365 (or 13877883363 counting only the distinct ones).

The product of its digits is 360000, while the sum is 40.

The spelling of 55511533444 in words is "fifty-five billion, five hundred eleven million, five hundred thirty-three thousand, four hundred forty-four".