55550508551 has 2 divisors, whose sum is σ = 55550508552. Its totient is φ = 55550508550.

The previous prime is 55550508527. The next prime is 55550508553. The reversal of 55550508551 is 15580505555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55550508551 - 2¹⁰ = 55550507527 is a prime.

Together with 55550508553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55550508553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27775254275 + 27775254276.

It is an arithmetic number, because the mean of its divisors is an integer number (27775254276).

Almost surely, 2^55550508551 is an apocalyptic number.

55550508551 is a deficient number, since it is larger than the sum of its proper divisors (1).

55550508551 is an equidigital number, since it uses as much as digits as its factorization.

55550508551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 625000, while the sum is 44.

The spelling of 55550508551 in words is "fifty-five billion, five hundred fifty million, five hundred eight thousand, five hundred fifty-one".