55051000091 has 8 divisors (see below), whose sum is σ = 58296522384. Its totient is φ = 51806280960.

The previous prime is 55051000073. The next prime is 55051000093. The reversal of 55051000091 is 19000015055.

55051000091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55051000091 - 2⁶ = 55051000027 is a prime.

It is a super-2 number, since 2×55051000091² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55051000091.

It is not an unprimeable number, because it can be changed into a prime (55051000093) 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, 56705 + ... + 336626.

It is an arithmetic number, because the mean of its divisors is an integer number (7287065298).

Almost surely, 2^55051000091 is an apocalyptic number.

55051000091 is a deficient number, since it is larger than the sum of its proper divisors (3245522293).

55051000091 is a wasteful number, since it uses less digits than its factorization.

55051000091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401581.

The product of its (nonzero) digits is 1125, while the sum is 26.

The spelling of 55051000091 in words is "fifty-five billion, fifty-one million, ninety-one", and thus it is an aban number and an uban number.