1073521513 has 4 divisors (see below), whose sum is σ = 1073731968. Its totient is φ = 1073311060.

The previous prime is 1073521499. The next prime is 1073521549. The reversal of 1073521513 is 3151253701.

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.

It is a cyclic number.

It is not a de Polignac number, because 1073521513 - 2²⁵ = 1039967081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1073527513) 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, 97381 + ... + 107842.

It is an arithmetic number, because the mean of its divisors is an integer number (268432992).

Almost surely, 2^1073521513 is an apocalyptic number.

It is an amenable number.

1073521513 is a deficient number, since it is larger than the sum of its proper divisors (210455).

1073521513 is an equidigital number, since it uses as much as digits as its factorization.

1073521513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210454.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 1073521513 is about 32764.6381484673. The cubic root of 1073521513 is about 1023.9299602287.

The spelling of 1073521513 in words is "one billion, seventy-three million, five hundred twenty-one thousand, five hundred thirteen".