54516391 has 2 divisors, whose sum is σ = 54516392. Its totient is φ = 54516390.

The previous prime is 54516379. The next prime is 54516439. The reversal of 54516391 is 19361545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54516391 - 2²¹ = 52419239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54516361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27258195 + 27258196.

It is an arithmetic number, because the mean of its divisors is an integer number (27258196).

Almost surely, 2^54516391 is an apocalyptic number.

54516391 is a deficient number, since it is larger than the sum of its proper divisors (1).

54516391 is an equidigital number, since it uses as much as digits as its factorization.

54516391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 34.

The square root of 54516391 is about 7383.5215852600. The cubic root of 54516391 is about 379.1773315413.

The spelling of 54516391 in words is "fifty-four million, five hundred sixteen thousand, three hundred ninety-one".