1205050501 has 2 divisors, whose sum is σ = 1205050502. Its totient is φ = 1205050500.

The previous prime is 1205050489. The next prime is 1205050513. The reversal of 1205050501 is 1050505021.

It is a balanced prime because it is at equal distance from previous prime (1205050489) and next prime (1205050513).

It can be written as a sum of positive squares in only one way, i.e., 739785601 + 465264900 = 27199^2 + 21570^2 .

It is a cyclic number.

It is not a de Polignac number, because 1205050501 - 2¹³ = 1205042309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1205050541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602525250 + 602525251.

It is an arithmetic number, because the mean of its divisors is an integer number (602525251).

Almost surely, 2^1205050501 is an apocalyptic number.

1205050501 is the 15525-th centered decagonal number.

It is an amenable number.

1205050501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205050501 is an equidigital number, since it uses as much as digits as its factorization.

1205050501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 1205050501 is about 34713.8373130946. The cubic root of 1205050501 is about 1064.1473042731.

Adding to 1205050501 its reverse (1050505021), we get a palindrome (2255555522).

It can be divided in two parts, 1 and 205050501, that added together give a palindrome (205050502).

The spelling of 1205050501 in words is "one billion, two hundred five million, fifty thousand, five hundred one".