54654517381 has 2 divisors, whose sum is σ = 54654517382. Its totient is φ = 54654517380.

The previous prime is 54654517361. The next prime is 54654517417. The reversal of 54654517381 is 18371545645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45025020481 + 9629496900 = 212191^2 + 98130^2 .

It is a cyclic number.

It is not a de Polignac number, because 54654517381 - 2²³ = 54646128773 is a prime.

It is a super-2 number, since 2×54654517381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54654517361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27327258690 + 27327258691.

It is an arithmetic number, because the mean of its divisors is an integer number (27327258691).

Almost surely, 2^54654517381 is an apocalyptic number.

It is an amenable number.

54654517381 is a deficient number, since it is larger than the sum of its proper divisors (1).

54654517381 is an equidigital number, since it uses as much as digits as its factorization.

54654517381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016000, while the sum is 49.

The spelling of 54654517381 in words is "fifty-four billion, six hundred fifty-four million, five hundred seventeen thousand, three hundred eighty-one".