1353200521 has 4 divisors (see below), whose sum is σ = 1353531600. Its totient is φ = 1352869444.

The previous prime is 1353200503. The next prime is 1353200533. The reversal of 1353200521 is 1250023531.

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 an emirpimes, since its reverse is a distinct semiprime: 1250023531 = 4283 ⋅291857.

It is a cyclic number.

It is not a de Polignac number, because 1353200521 - 2²⁵ = 1319646089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1353200492 and 1353200501.

It is not an unprimeable number, because it can be changed into a prime (1353200551) 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, 159331 + ... + 167608.

It is an arithmetic number, because the mean of its divisors is an integer number (338382900).

Almost surely, 2^1353200521 is an apocalyptic number.

It is an amenable number.

1353200521 is a deficient number, since it is larger than the sum of its proper divisors (331079).

1353200521 is an equidigital number, since it uses as much as digits as its factorization.

1353200521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331078.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1353200521 is about 36785.8739328020. The cubic root of 1353200521 is about 1106.0821543853.

The spelling of 1353200521 in words is "one billion, three hundred fifty-three million, two hundred thousand, five hundred twenty-one".