54463891 has 2 divisors, whose sum is σ = 54463892. Its totient is φ = 54463890.

The previous prime is 54463837. The next prime is 54463897. The reversal of 54463891 is 19836445.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54463891 is a prime.

It is not a weakly prime, because it can be changed into another prime (54463897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27231945 + 27231946.

It is an arithmetic number, because the mean of its divisors is an integer number (27231946).

Almost surely, 2^54463891 is an apocalyptic number.

54463891 is the 4668-th centered pentagonal number.

54463891 is a deficient number, since it is larger than the sum of its proper divisors (1).

54463891 is an equidigital number, since it uses as much as digits as its factorization.

54463891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The square root of 54463891 is about 7379.9655148246. The cubic root of 54463891 is about 379.0555748663.

The spelling of 54463891 in words is "fifty-four million, four hundred sixty-three thousand, eight hundred ninety-one".