102044521 has 4 divisors (see below), whose sum is σ = 103717444. Its totient is φ = 100371600.

The previous prime is 102044429. The next prime is 102044539. The reversal of 102044521 is 125440201.

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 40500496 + 61544025 = 6364^2 + 7845^2 .

It is a cyclic number.

It is not a de Polignac number, because 102044521 - 2⁹ = 102044009 is a prime.

It is a super-2 number, since 2×102044521² = 20826168532238882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102044561) 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, 836370 + ... + 836491.

It is an arithmetic number, because the mean of its divisors is an integer number (25929361).

Almost surely, 2^102044521 is an apocalyptic number.

It is an amenable number.

102044521 is a deficient number, since it is larger than the sum of its proper divisors (1672923).

102044521 is an equidigital number, since it uses as much as digits as its factorization.

102044521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672922.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 102044521 is about 10101.7088158390. The cubic root of 102044521 is about 467.3008422766.

Adding to 102044521 its reverse (125440201), we get a palindrome (227484722).

The spelling of 102044521 in words is "one hundred two million, forty-four thousand, five hundred twenty-one".