55470405509 has 2 divisors, whose sum is σ = 55470405510. Its totient is φ = 55470405508.

The previous prime is 55470405469. The next prime is 55470405593. The reversal of 55470405509 is 90550407455.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29798354884 + 25672050625 = 172622^2 + 160225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55470405509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55470405509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55470405709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27735202754 + 27735202755.

It is an arithmetic number, because the mean of its divisors is an integer number (27735202755).

Almost surely, 2^55470405509 is an apocalyptic number.

It is an amenable number.

55470405509 is a deficient number, since it is larger than the sum of its proper divisors (1).

55470405509 is an equidigital number, since it uses as much as digits as its factorization.

55470405509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630000, while the sum is 44.

The spelling of 55470405509 in words is "fifty-five billion, four hundred seventy million, four hundred five thousand, five hundred nine".