102520573 has 4 divisors (see below), whose sum is σ = 103041180. Its totient is φ = 101999968.

The previous prime is 102520567. The next prime is 102520577. The reversal of 102520573 is 375025201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 71182969 + 31337604 = 8437^2 + 5598^2 .

It is a cyclic number.

It is not a de Polignac number, because 102520573 - 2¹⁷ = 102389501 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 (102520577) 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, 260008 + ... + 260401.

It is an arithmetic number, because the mean of its divisors is an integer number (25760295).

Almost surely, 2^102520573 is an apocalyptic number.

It is an amenable number.

102520573 is a deficient number, since it is larger than the sum of its proper divisors (520607).

102520573 is an equidigital number, since it uses as much as digits as its factorization.

102520573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520606.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 102520573 is about 10125.2443427307. The cubic root of 102520573 is about 468.0263898358.

Adding to 102520573 its reverse (375025201), we get a palindrome (477545774).

The spelling of 102520573 in words is "one hundred two million, five hundred twenty thousand, five hundred seventy-three".