55617296261 has 16 divisors (see below), whose sum is σ = 61907059200. Its totient is φ = 49746700800.

The previous prime is 55617296239. The next prime is 55617296269. The reversal of 55617296261 is 16269271655.

55617296261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55617296261 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 (55617296269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1127396 + ... + 1175693.

It is an arithmetic number, because the mean of its divisors is an integer number (3869191200).

Almost surely, 2^55617296261 is an apocalyptic number.

It is an amenable number.

55617296261 is a deficient number, since it is larger than the sum of its proper divisors (6289762939).

55617296261 is a wasteful number, since it uses less digits than its factorization.

55617296261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303180.

The product of its digits is 1360800, while the sum is 50.

The spelling of 55617296261 in words is "fifty-five billion, six hundred seventeen million, two hundred ninety-six thousand, two hundred sixty-one".