55505510651 has 4 divisors (see below), whose sum is σ = 55583798400. Its totient is φ = 55427222904.

The previous prime is 55505510551. The next prime is 55505510689. The reversal of 55505510651 is 15601550555.

It is a happy number.

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 55505510651 - 2¹⁴ = 55505494267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55505510551) 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, 39142811 + ... + 39144228.

It is an arithmetic number, because the mean of its divisors is an integer number (13895949600).

Almost surely, 2^55505510651 is an apocalyptic number.

55505510651 is a deficient number, since it is larger than the sum of its proper divisors (78287749).

55505510651 is an equidigital number, since it uses as much as digits as its factorization.

55505510651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78287748.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 55505510651 in words is "fifty-five billion, five hundred five million, five hundred ten thousand, six hundred fifty-one".