5391621461 has 2 divisors, whose sum is σ = 5391621462. Its totient is φ = 5391621460.

The previous prime is 5391621419. The next prime is 5391621479. The reversal of 5391621461 is 1641261935.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4770664900 + 620956561 = 69070^2 + 24919^2 .

It is a cyclic number.

It is not a de Polignac number, because 5391621461 - 2²⁶ = 5324512597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5391621481) 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, 2695810730 + 2695810731.

It is an arithmetic number, because the mean of its divisors is an integer number (2695810731).

Almost surely, 2^5391621461 is an apocalyptic number.

It is an amenable number.

5391621461 is a deficient number, since it is larger than the sum of its proper divisors (1).

5391621461 is an equidigital number, since it uses as much as digits as its factorization.

5391621461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 38.

The square root of 5391621461 is about 73427.6614158452. The cubic root of 5391621461 is about 1753.5028029900.

The spelling of 5391621461 in words is "five billion, three hundred ninety-one million, six hundred twenty-one thousand, four hundred sixty-one".