1201567 has 2 divisors, whose sum is σ = 1201568. Its totient is φ = 1201566.

The previous prime is 1201559. The next prime is 1201583. The reversal of 1201567 is 7651021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201567 - 2³ = 1201559 is a prime.

It is a Chen prime.

It is an Ulam number.

1201567 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1261567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600783 + 600784.

It is an arithmetic number, because the mean of its divisors is an integer number (600784).

2^1201567 is an apocalyptic number.

1201567 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201567 is an equidigital number, since it uses as much as digits as its factorization.

1201567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1201567 is about 1096.1601160414. The cubic root of 1201567 is about 106.3120919651.

Adding to 1201567 its reverse (7651021), we get a palindrome (8852588).

The spelling of 1201567 in words is "one million, two hundred one thousand, five hundred sixty-seven".