55398054497 has 4 divisors (see below), whose sum is σ = 55629845760. Its totient is φ = 55166263236.

The previous prime is 55398054451. The next prime is 55398054553. The reversal of 55398054497 is 79445089355.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79445089355 = 5 ⋅15889017871.

It is a cyclic number.

It is not a de Polignac number, because 55398054497 - 2²⁶ = 55330945633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55398054407) 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, 115895273 + ... + 115895750.

It is an arithmetic number, because the mean of its divisors is an integer number (13907461440).

Almost surely, 2^55398054497 is an apocalyptic number.

It is an amenable number.

55398054497 is a deficient number, since it is larger than the sum of its proper divisors (231791263).

55398054497 is a wasteful number, since it uses less digits than its factorization.

55398054497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231791262.

The product of its (nonzero) digits is 27216000, while the sum is 59.

The spelling of 55398054497 in words is "fifty-five billion, three hundred ninety-eight million, fifty-four thousand, four hundred ninety-seven".