55479720237841 has 3 divisors (see below), whose sum is σ = 55479727686313. Its totient is φ = 55479712789370.

The previous prime is 55479720237829. The next prime is 55479720237859. The reversal of 55479720237841 is 14873202797455.

It is a happy number.

The square root of 55479720237841 is 7448471.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 55479720237841 - 2¹³ = 55479720229649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55479720237811) 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 in 2 ways as a sum of consecutive naturals, for example, 3724236 + ... + 11172706.

Almost surely, 2^{55479720237841} is an apocalyptic number.

55479720237841 is the 7448471-st square number.

55479720237841 is the 3724236-th centered octagonal number.

It is an amenable number.

55479720237841 is a deficient number, since it is larger than the sum of its proper divisors (7448472).

55479720237841 is an frugal number, since it uses more digits than its factorization.

55479720237841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14896942 (or 7448471 counting only the distinct ones).

The product of its (nonzero) digits is 118540800, while the sum is 64.

The spelling of 55479720237841 in words is "fifty-five trillion, four hundred seventy-nine billion, seven hundred twenty million, two hundred thirty-seven thousand, eight hundred forty-one".