5897155921 has 2 divisors, whose sum is σ = 5897155922. Its totient is φ = 5897155920.

The previous prime is 5897155919. The next prime is 5897155961. The reversal of 5897155921 is 1295517985.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5873536321 + 23619600 = 76639^2 + 4860^2 .

It is a cyclic number.

It is not a de Polignac number, because 5897155921 - 2¹ = 5897155919 is a prime.

Together with 5897155919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5897155961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2948577960 + 2948577961.

It is an arithmetic number, because the mean of its divisors is an integer number (2948577961).

Almost surely, 2^5897155921 is an apocalyptic number.

It is an amenable number.

5897155921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5897155921 is an equidigital number, since it uses as much as digits as its factorization.

5897155921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134000, while the sum is 52.

The square root of 5897155921 is about 76792.9418696797. The cubic root of 5897155921 is about 1806.6784745071.

The spelling of 5897155921 in words is "five billion, eight hundred ninety-seven million, one hundred fifty-five thousand, nine hundred twenty-one".