1601157211 has 2 divisors, whose sum is σ = 1601157212. Its totient is φ = 1601157210.

The previous prime is 1601157197. The next prime is 1601157221. The reversal of 1601157211 is 1127511061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1601157211 - 2¹⁵ = 1601124443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1601157221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800578605 + 800578606.

It is an arithmetic number, because the mean of its divisors is an integer number (800578606).

Almost surely, 2^1601157211 is an apocalyptic number.

1601157211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601157211 is an equidigital number, since it uses as much as digits as its factorization.

1601157211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 25.

The square root of 1601157211 is about 40014.4625229429. The cubic root of 1601157211 is about 1169.8890027898.

Adding to 1601157211 its reverse (1127511061), we get a palindrome (2728668272).

The spelling of 1601157211 in words is "one billion, six hundred one million, one hundred fifty-seven thousand, two hundred eleven".