5821971157 has 2 divisors, whose sum is σ = 5821971158. Its totient is φ = 5821971156.

The previous prime is 5821971139. The next prime is 5821971161. The reversal of 5821971157 is 7511791285.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5801259556 + 20711601 = 76166^2 + 4551^2 .

It is a cyclic number.

It is not a de Polignac number, because 5821971157 - 2²³ = 5813582549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5821971107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2910985578 + 2910985579.

It is an arithmetic number, because the mean of its divisors is an integer number (2910985579).

Almost surely, 2^5821971157 is an apocalyptic number.

It is an amenable number.

5821971157 is a deficient number, since it is larger than the sum of its proper divisors (1).

5821971157 is an equidigital number, since it uses as much as digits as its factorization.

5821971157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 46.

The square root of 5821971157 is about 76301.8424220543. The cubic root of 5821971157 is about 1798.9676340423.

The spelling of 5821971157 in words is "five billion, eight hundred twenty-one million, nine hundred seventy-one thousand, one hundred fifty-seven".