55602050261 has 4 divisors (see below), whose sum is σ = 56175267372. Its totient is φ = 55028833152.

The previous prime is 55602050227. The next prime is 55602050269. The reversal of 55602050261 is 16205020655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40710729361 + 14891320900 = 201769^2 + 122030^2 .

It is a cyclic number.

It is not a de Polignac number, because 55602050261 - 2¹⁸ = 55601788117 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 (55602050269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286608410 + ... + 286608603.

It is an arithmetic number, because the mean of its divisors is an integer number (14043816843).

Almost surely, 2^55602050261 is an apocalyptic number.

It is an amenable number.

55602050261 is a deficient number, since it is larger than the sum of its proper divisors (573217111).

55602050261 is an equidigital number, since it uses as much as digits as its factorization.

55602050261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573217110.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 55602050261 in words is "fifty-five billion, six hundred two million, fifty thousand, two hundred sixty-one".