5401021291 has 2 divisors, whose sum is σ = 5401021292. Its totient is φ = 5401021290.

The previous prime is 5401021271. The next prime is 5401021319. The reversal of 5401021291 is 1921201045.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5401021291 - 2⁵ = 5401021259 is a prime.

It is not a weakly prime, because it can be changed into another prime (5401021211) 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, 2700510645 + 2700510646.

It is an arithmetic number, because the mean of its divisors is an integer number (2700510646).

Almost surely, 2^5401021291 is an apocalyptic number.

5401021291 is a deficient number, since it is larger than the sum of its proper divisors (1).

5401021291 is an equidigital number, since it uses as much as digits as its factorization.

5401021291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 5401021291 is about 73491.6409600439. The cubic root of 5401021291 is about 1754.5212386595.

The spelling of 5401021291 in words is "five billion, four hundred one million, twenty-one thousand, two hundred ninety-one".