5455740721 has 2 divisors, whose sum is σ = 5455740722. Its totient is φ = 5455740720.

The previous prime is 5455740707. The next prime is 5455740743. The reversal of 5455740721 is 1270475545.

5455740721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3836563600 + 1619177121 = 61940^2 + 40239^2 .

It is a cyclic number.

It is not a de Polignac number, because 5455740721 - 2⁷ = 5455740593 is a prime.

It is not a weakly prime, because it can be changed into another prime (5455740751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2727870360 + 2727870361.

It is an arithmetic number, because the mean of its divisors is an integer number (2727870361).

Almost surely, 2^5455740721 is an apocalyptic number.

It is an amenable number.

5455740721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5455740721 is an equidigital number, since it uses as much as digits as its factorization.

5455740721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196000, while the sum is 40.

The square root of 5455740721 is about 73862.9861364946. The cubic root of 5455740721 is about 1760.4265410096.

The spelling of 5455740721 in words is "five billion, four hundred fifty-five million, seven hundred forty thousand, seven hundred twenty-one".