54746925781 has 2 divisors, whose sum is σ = 54746925782. Its totient is φ = 54746925780.

The previous prime is 54746925773. The next prime is 54746925787. The reversal of 54746925781 is 18752964745.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40820565681 + 13926360100 = 202041^2 + 118010^2 .

It is a cyclic number.

It is not a de Polignac number, because 54746925781 - 2³ = 54746925773 is a prime.

It is a super-2 number, since 2×54746925781² (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 (54746925787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27373462890 + 27373462891.

It is an arithmetic number, because the mean of its divisors is an integer number (27373462891).

Almost surely, 2^54746925781 is an apocalyptic number.

It is an amenable number.

54746925781 is a deficient number, since it is larger than the sum of its proper divisors (1).

54746925781 is an equidigital number, since it uses as much as digits as its factorization.

54746925781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16934400, while the sum is 58.

The spelling of 54746925781 in words is "fifty-four billion, seven hundred forty-six million, nine hundred twenty-five thousand, seven hundred eighty-one".