55225237261 has 4 divisors (see below), whose sum is σ = 55327317724. Its totient is φ = 55123156800.

The previous prime is 55225237241. The next prime is 55225237313. The reversal of 55225237261 is 16273252255.

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 11581849161 + 43643388100 = 107619^2 + 208910^2 .

It is a cyclic number.

It is not a de Polignac number, because 55225237261 - 2¹³ = 55225229069 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 (55225237241) 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, 51039420 + ... + 51040501.

It is an arithmetic number, because the mean of its divisors is an integer number (13831829431).

Almost surely, 2^55225237261 is an apocalyptic number.

It is an amenable number.

55225237261 is a deficient number, since it is larger than the sum of its proper divisors (102080463).

55225237261 is a wasteful number, since it uses less digits than its factorization.

55225237261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102080462.

The product of its digits is 252000, while the sum is 40.

The spelling of 55225237261 in words is "fifty-five billion, two hundred twenty-five million, two hundred thirty-seven thousand, two hundred sixty-one".