5155161997 has 2 divisors, whose sum is σ = 5155161998. Its totient is φ = 5155161996.

The previous prime is 5155161989. The next prime is 5155162009. The reversal of 5155161997 is 7991615515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3034467396 + 2120694601 = 55086^2 + 46051^2 .

It is a cyclic number.

It is not a de Polignac number, because 5155161997 - 2³ = 5155161989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5155161997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5155161497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2577580998 + 2577580999.

It is an arithmetic number, because the mean of its divisors is an integer number (2577580999).

Almost surely, 2^5155161997 is an apocalyptic number.

It is an amenable number.

5155161997 is a deficient number, since it is larger than the sum of its proper divisors (1).

5155161997 is an equidigital number, since it uses as much as digits as its factorization.

5155161997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 425250, while the sum is 49.

The square root of 5155161997 is about 71799.4568015664. The cubic root of 5155161997 is about 1727.4842868549.

The spelling of 5155161997 in words is "five billion, one hundred fifty-five million, one hundred sixty-one thousand, nine hundred ninety-seven".