55280552551 has 4 divisors (see below), whose sum is σ = 63177774352. Its totient is φ = 47383330752.

The previous prime is 55280552549. The next prime is 55280552627. The reversal of 55280552551 is 15525508255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15525508255 = 5 ⋅3105101651.

It is a cyclic number.

It is not a de Polignac number, because 55280552551 - 2¹ = 55280552549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55280552498 and 55280552507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55280553551) 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, 3948610890 + ... + 3948610903.

It is an arithmetic number, because the mean of its divisors is an integer number (15794443588).

Almost surely, 2^55280552551 is an apocalyptic number.

55280552551 is a deficient number, since it is larger than the sum of its proper divisors (7897221801).

55280552551 is an equidigital number, since it uses as much as digits as its factorization.

55280552551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7897221800.

The product of its (nonzero) digits is 500000, while the sum is 43.

The spelling of 55280552551 in words is "fifty-five billion, two hundred eighty million, five hundred fifty-two thousand, five hundred fifty-one".