55489926969 has 27 divisors (see below), whose sum is σ = 80737167693. Its totient is φ = 36725213952.

The previous prime is 55489926959. The next prime is 55489926977. The reversal of 55489926969 is 96962998455.

The square root of 55489926969 is 235563.

It is a perfect power (a square), and thus also a powerful number.

55489926969 is a `hidden beast` number, since 55 + 489 + 9 + 2 + 6 + 96 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 15521920569 + 39968006400 = 124587^2 + 199920^2 .

It is not a de Polignac number, because 55489926969 - 2¹¹ = 55489924921 is a prime.

It is a super-2 number, since 2×55489926969² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55489926897 and 55489926906.

It is not an unprimeable number, because it can be changed into a prime (55489926929) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 164658369 + ... + 164658705.

Almost surely, 2^55489926969 is an apocalyptic number.

55489926969 is the 235563-rd square number.

55489926969 is the 117782-nd centered octagonal number.

It is an amenable number.

55489926969 is a deficient number, since it is larger than the sum of its proper divisors (25247240724).

55489926969 is an frugal number, since it uses more digits than its factorization.

55489926969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 573 counting only the distinct ones).

The product of its digits is 377913600, while the sum is 72.

The spelling of 55489926969 in words is "fifty-five billion, four hundred eighty-nine million, nine hundred twenty-six thousand, nine hundred sixty-nine".