1035201521 has 4 divisors (see below), whose sum is σ = 1035273792. Its totient is φ = 1035129252.

The previous prime is 1035201467. The next prime is 1035201533. The reversal of 1035201521 is 1251025301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1251025301 = 643 ⋅1945607.

It is a cyclic number.

It is not a de Polignac number, because 1035201521 - 2¹⁸ = 1034939377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1035201493 and 1035201502.

It is not an unprimeable number, because it can be changed into a prime (1035201581) 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, 6605 + ... + 45978.

It is an arithmetic number, because the mean of its divisors is an integer number (258818448).

Almost surely, 2^1035201521 is an apocalyptic number.

It is an amenable number.

1035201521 is a deficient number, since it is larger than the sum of its proper divisors (72271).

1035201521 is an equidigital number, since it uses as much as digits as its factorization.

1035201521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72270.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1035201521 is about 32174.5477202089. The cubic root of 1035201521 is about 1011.5987883075.

Adding to 1035201521 its reverse (1251025301), we get a palindrome (2286226822).

The spelling of 1035201521 in words is "one billion, thirty-five million, two hundred one thousand, five hundred twenty-one".