55265876621 has 8 divisors (see below), whose sum is σ = 55775502264. Its totient is φ = 54758246400.

The previous prime is 55265876591. The next prime is 55265876629. The reversal of 55265876621 is 12667856255.

It can be written as a sum of positive squares in 4 ways, for example, as 690375625 + 54575500996 = 26275^2 + 233614^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 55265876621 - 2⁶ = 55265876557 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 (55265876629) 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, 443180 + ... + 554021.

It is an arithmetic number, because the mean of its divisors is an integer number (6971937783).

Almost surely, 2^55265876621 is an apocalyptic number.

It is an amenable number.

55265876621 is a deficient number, since it is larger than the sum of its proper divisors (509625643).

55265876621 is a wasteful number, since it uses less digits than its factorization.

55265876621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997711.

The product of its digits is 6048000, while the sum is 53.

The spelling of 55265876621 in words is "fifty-five billion, two hundred sixty-five million, eight hundred seventy-six thousand, six hundred twenty-one".