1201715503 has 4 divisors (see below), whose sum is σ = 1202781040. Its totient is φ = 1200649968.

The previous prime is 1201715497. The next prime is 1201715509. The reversal of 1201715503 is 3055171021.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1201715497) and next prime (1201715509).

It is a cyclic number.

It is not a de Polignac number, because 1201715503 - 2⁹ = 1201714991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201715509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531075 + ... + 533332.

It is an arithmetic number, because the mean of its divisors is an integer number (300695260).

Almost surely, 2^1201715503 is an apocalyptic number.

1201715503 is a deficient number, since it is larger than the sum of its proper divisors (1065537).

1201715503 is a wasteful number, since it uses less digits than its factorization.

1201715503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065536.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 1201715503 is about 34665.7684611203. The cubic root of 1201715503 is about 1063.1647152781.

Adding to 1201715503 its reverse (3055171021), we get a palindrome (4256886524).

The spelling of 1201715503 in words is "one billion, two hundred one million, seven hundred fifteen thousand, five hundred three".