55280750261 has 16 divisors (see below), whose sum is σ = 60923708928. Its totient is φ = 49741032000.

The previous prime is 55280750251. The next prime is 55280750269. The reversal of 55280750261 is 16205708255.

It is not a de Polignac number, because 55280750261 - 2²⁶ = 55213641397 is a prime.

It is a super-2 number, since 2×55280750261² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55280750269) 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, 4345436 + ... + 4358138.

It is an arithmetic number, because the mean of its divisors is an integer number (3807731808).

Almost surely, 2^55280750261 is an apocalyptic number.

It is an amenable number.

55280750261 is a deficient number, since it is larger than the sum of its proper divisors (5642958667).

55280750261 is a wasteful number, since it uses less digits than its factorization.

55280750261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16732.

The product of its (nonzero) digits is 168000, while the sum is 41.

The spelling of 55280750261 in words is "fifty-five billion, two hundred eighty million, seven hundred fifty thousand, two hundred sixty-one".