54905031091 has 2 divisors, whose sum is σ = 54905031092. Its totient is φ = 54905031090.

The previous prime is 54905031061. The next prime is 54905031109. The reversal of 54905031091 is 19013050945.

It is a happy number.

Together with next prime (54905031109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54905031091 - 2¹³ = 54905022899 is a prime.

It is a super-3 number, since 3×54905031091³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 54905031091.

It is not a weakly prime, because it can be changed into another prime (54905031001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27452515545 + 27452515546.

It is an arithmetic number, because the mean of its divisors is an integer number (27452515546).

Almost surely, 2^54905031091 is an apocalyptic number.

54905031091 is a deficient number, since it is larger than the sum of its proper divisors (1).

54905031091 is an equidigital number, since it uses as much as digits as its factorization.

54905031091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 37.

The spelling of 54905031091 in words is "fifty-four billion, nine hundred five million, thirty-one thousand, ninety-one".