54191089 has 2 divisors, whose sum is σ = 54191090. Its totient is φ = 54191088.

The previous prime is 54191063. The next prime is 54191101. The reversal of 54191089 is 98019145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53949025 + 242064 = 7345^2 + 492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54191089 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54191009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27095544 + 27095545.

It is an arithmetic number, because the mean of its divisors is an integer number (27095545).

Almost surely, 2^54191089 is an apocalyptic number.

It is an amenable number.

54191089 is a deficient number, since it is larger than the sum of its proper divisors (1).

54191089 is an equidigital number, since it uses as much as digits as its factorization.

54191089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 54191089 is about 7361.4597057921. The cubic root of 54191089 is about 378.4216364920.

The spelling of 54191089 in words is "fifty-four million, one hundred ninety-one thousand, eighty-nine".