55061737447 has 4 divisors (see below), whose sum is σ = 55380013560. Its totient is φ = 54743461336.

The previous prime is 55061737411. The next prime is 55061737571. The reversal of 55061737447 is 74473716055.

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

It is a cyclic number.

It is not a de Polignac number, because 55061737447 - 2²⁷ = 54927519719 is a prime.

It is a super-3 number, since 3×55061737447³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55061737447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55061737147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159137797 + ... + 159138142.

It is an arithmetic number, because the mean of its divisors is an integer number (13845003390).

Almost surely, 2^55061737447 is an apocalyptic number.

55061737447 is a deficient number, since it is larger than the sum of its proper divisors (318276113).

55061737447 is a wasteful number, since it uses less digits than its factorization.

55061737447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318276112.

The product of its (nonzero) digits is 2469600, while the sum is 49.

The spelling of 55061737447 in words is "fifty-five billion, sixty-one million, seven hundred thirty-seven thousand, four hundred forty-seven".