102521441 has 8 divisors (see below), whose sum is σ = 118420704. Its totient is φ = 87718720.

The previous prime is 102521431. The next prime is 102521449. The reversal of 102521441 is 144125201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102521441 - 2¹⁰ = 102520417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102521449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273935 + ... + 274308.

It is an arithmetic number, because the mean of its divisors is an integer number (14802588).

Almost surely, 2^102521441 is an apocalyptic number.

102521441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102521441 is a deficient number, since it is larger than the sum of its proper divisors (15899263).

102521441 is a wasteful number, since it uses less digits than its factorization.

102521441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548271.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 102521441 is about 10125.2872058031. The cubic root of 102521441 is about 468.0277106951.

Adding to 102521441 its reverse (144125201), we get a palindrome (246646642).

The spelling of 102521441 in words is "one hundred two million, five hundred twenty-one thousand, four hundred forty-one".