1201162553 has 2 divisors, whose sum is σ = 1201162554. Its totient is φ = 1201162552.

The previous prime is 1201162499. The next prime is 1201162657. The reversal of 1201162553 is 3552611021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1067459584 + 133702969 = 32672^2 + 11563^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201162553 - 2¹⁰ = 1201161529 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201162253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600581276 + 600581277.

It is an arithmetic number, because the mean of its divisors is an integer number (600581277).

Almost surely, 2^1201162553 is an apocalyptic number.

It is an amenable number.

1201162553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201162553 is an equidigital number, since it uses as much as digits as its factorization.

1201162553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1201162553 is about 34657.7920964391. The cubic root of 1201162553 is about 1063.0016242309.

Adding to 1201162553 its reverse (3552611021), we get a palindrome (4753773574).

The spelling of 1201162553 in words is "one billion, two hundred one million, one hundred sixty-two thousand, five hundred fifty-three".