55274620261 has 16 divisors (see below), whose sum is σ = 64089083520. Its totient is φ = 46693152000.

The previous prime is 55274620259. The next prime is 55274620273. The reversal of 55274620261 is 16202647255.

It is a cyclic number.

It is not a de Polignac number, because 55274620261 - 2¹ = 55274620259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55274620201) 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, 46761 + ... + 335761.

It is an arithmetic number, because the mean of its divisors is an integer number (4005567720).

Almost surely, 2^55274620261 is an apocalyptic number.

It is an amenable number.

55274620261 is a deficient number, since it is larger than the sum of its proper divisors (8814463259).

55274620261 is a wasteful number, since it uses less digits than its factorization.

55274620261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289404.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 55274620261 in words is "fifty-five billion, two hundred seventy-four million, six hundred twenty thousand, two hundred sixty-one".