161200513 has 2 divisors, whose sum is σ = 161200514. Its totient is φ = 161200512.

The previous prime is 161200499. The next prime is 161200573. The reversal of 161200513 is 315002161.

161200513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159592689 + 1607824 = 12633^2 + 1268^2 .

It is a cyclic number.

It is not a de Polignac number, because 161200513 - 2¹³ = 161192321 is a prime.

It is not a weakly prime, because it can be changed into another prime (161200573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80600256 + 80600257.

It is an arithmetic number, because the mean of its divisors is an integer number (80600257).

Almost surely, 2^161200513 is an apocalyptic number.

It is an amenable number.

161200513 is a deficient number, since it is larger than the sum of its proper divisors (1).

161200513 is an equidigital number, since it uses as much as digits as its factorization.

161200513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 161200513 is about 12696.4764009547. The cubic root of 161200513 is about 544.2379304957.

Adding to 161200513 its reverse (315002161), we get a palindrome (476202674).

The spelling of 161200513 in words is "one hundred sixty-one million, two hundred thousand, five hundred thirteen".