55969955 has 4 divisors (see below), whose sum is σ = 67163952. Its totient is φ = 44775960.

The previous prime is 55969951. The next prime is 55969957. The reversal of 55969955 is 55996955.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55969955 - 2² = 55969951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55969897 and 55969906.

It is not an unprimeable number, because it can be changed into a prime (55969951) 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 3 ways as a sum of consecutive naturals, for example, 5596991 + ... + 5597000.

It is an arithmetic number, because the mean of its divisors is an integer number (16790988).

Almost surely, 2^55969955 is an apocalyptic number.

55969955 is a deficient number, since it is larger than the sum of its proper divisors (11193997).

55969955 is a wasteful number, since it uses less digits than its factorization.

55969955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11193996.

The product of its digits is 2733750, while the sum is 53.

The square root of 55969955 is about 7481.3070382120. The cubic root of 55969955 is about 382.5178028651.

Subtracting 55969955 from its reverse (55996955), we obtain a cube (27000 = 30³).

It can be divided in two parts, 5596 and 9955, that added together give a palindrome (15551).

The spelling of 55969955 in words is "fifty-five million, nine hundred sixty-nine thousand, nine hundred fifty-five".