5401597991 has 2 divisors, whose sum is σ = 5401597992. Its totient is φ = 5401597990.

The previous prime is 5401597973. The next prime is 5401598009. The reversal of 5401597991 is 1997951045.

It is a balanced prime because it is at equal distance from previous prime (5401597973) and next prime (5401598009).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5401597991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5401597891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2700798995 + 2700798996.

It is an arithmetic number, because the mean of its divisors is an integer number (2700798996).

Almost surely, 2^5401597991 is an apocalyptic number.

5401597991 is a deficient number, since it is larger than the sum of its proper divisors (1).

5401597991 is an equidigital number, since it uses as much as digits as its factorization.

5401597991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 510300, while the sum is 50.

The square root of 5401597991 is about 73495.5644307873. The cubic root of 5401597991 is about 1754.5836834165.

The spelling of 5401597991 in words is "five billion, four hundred one million, five hundred ninety-seven thousand, nine hundred ninety-one".