7751561055 has 32 divisors (see below), whose sum is σ = 14177839104. Its totient is φ = 3542681856.

The previous prime is 7751560987. The next prime is 7751561063. The reversal of 7751561055 is 5501651577.

It is a happy number.

It is not a de Polignac number, because 7751561055 - 2¹⁰ = 7751560031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7751560998 and 7751561016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 603379 + ... + 616091.

It is an arithmetic number, because the mean of its divisors is an integer number (443057472).

Almost surely, 2^7751561055 is an apocalyptic number.

7751561055 is a deficient number, since it is larger than the sum of its proper divisors (6426278049).

7751561055 is a wasteful number, since it uses less digits than its factorization.

7751561055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18535.

The product of its (nonzero) digits is 183750, while the sum is 42.

The square root of 7751561055 is about 88042.9500584800. The cubic root of 7751561055 is about 1979.0786665971.

The spelling of 7751561055 in words is "seven billion, seven hundred fifty-one million, five hundred sixty-one thousand, fifty-five".