1201004551 has 2 divisors, whose sum is σ = 1201004552. Its totient is φ = 1201004550.

The previous prime is 1201004543. The next prime is 1201004587. The reversal of 1201004551 is 1554001021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201004551 - 2³ = 1201004543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201004351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600502275 + 600502276.

It is an arithmetic number, because the mean of its divisors is an integer number (600502276).

Almost surely, 2^1201004551 is an apocalyptic number.

1201004551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201004551 is an equidigital number, since it uses as much as digits as its factorization.

1201004551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1201004551 is about 34655.5125629387. The cubic root of 1201004551 is about 1062.9550127912.

Adding to 1201004551 its reverse (1554001021), we get a palindrome (2755005572).

The spelling of 1201004551 in words is "one billion, two hundred one million, four thousand, five hundred fifty-one".