55055726331 has 8 divisors (see below), whose sum is σ = 73900304400. Its totient is φ = 36457482912.

The previous prime is 55055726287. The next prime is 55055726339. The reversal of 55055726331 is 13362755055.

It is a happy number.

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

It is not a de Polignac number, because 55055726331 - 2¹³ = 55055718139 is a prime.

It is a super-2 number, since 2×55055726331² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55055726339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61583140 + ... + 61584033.

It is an arithmetic number, because the mean of its divisors is an integer number (9237538050).

Almost surely, 2^55055726331 is an apocalyptic number.

55055726331 is a deficient number, since it is larger than the sum of its proper divisors (18844578069).

55055726331 is a wasteful number, since it uses less digits than its factorization.

55055726331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123167325.

The product of its (nonzero) digits is 472500, while the sum is 42.

The spelling of 55055726331 in words is "fifty-five billion, fifty-five million, seven hundred twenty-six thousand, three hundred thirty-one".