55512961 has 8 divisors (see below), whose sum is σ = 66201984. Its totient is φ = 45513600.

The previous prime is 55512911. The next prime is 55512979. The reversal of 55512961 is 16921555.

55512961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55512961 - 2⁷ = 55512833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55512901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172240 + ... + 172561.

It is an arithmetic number, because the mean of its divisors is an integer number (8275248).

Almost surely, 2^55512961 is an apocalyptic number.

It is an amenable number.

55512961 is a deficient number, since it is larger than the sum of its proper divisors (10689023).

55512961 is a wasteful number, since it uses less digits than its factorization.

55512961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344831.

The product of its digits is 13500, while the sum is 34.

The square root of 55512961 is about 7450.7020474583. The cubic root of 55512961 is about 381.4738720628.

It can be divided in two parts, 5551 and 2961, that multiplied together give a triangular number (16436511 = T₅₇₃₃).

The spelling of 55512961 in words is "fifty-five million, five hundred twelve thousand, nine hundred sixty-one".