651555055 has 8 divisors (see below), whose sum is σ = 807087744. Its totient is φ = 504429600.

The previous prime is 651555043. The next prime is 651555059. The reversal of 651555055 is 550555156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 651555055 - 2⁷ = 651554927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651555059) 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 7 ways as a sum of consecutive naturals, for example, 2101636 + ... + 2101945.

It is an arithmetic number, because the mean of its divisors is an integer number (100885968).

Almost surely, 2^651555055 is an apocalyptic number.

651555055 is a deficient number, since it is larger than the sum of its proper divisors (155532689).

651555055 is a wasteful number, since it uses less digits than its factorization.

651555055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4203617.

The product of its (nonzero) digits is 93750, while the sum is 37.

The square root of 651555055 is about 25525.5764871237. The cubic root of 651555055 is about 866.9293497788.

The spelling of 651555055 in words is "six hundred fifty-one million, five hundred fifty-five thousand, fifty-five".