521232541 has 8 divisors (see below), whose sum is σ = 536043200. Its totient is φ = 506544192.

The previous prime is 521232539. The next prime is 521232553. The reversal of 521232541 is 145232125.

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 521232541 - 2¹ = 521232539 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521232571) 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, 21900 + ... + 39013.

It is an arithmetic number, because the mean of its divisors is an integer number (67005400).

Almost surely, 2^521232541 is an apocalyptic number.

It is an amenable number.

521232541 is a deficient number, since it is larger than the sum of its proper divisors (14810659).

521232541 is a wasteful number, since it uses less digits than its factorization.

521232541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61155.

The product of its digits is 2400, while the sum is 25.

The square root of 521232541 is about 22830.5177558460. The cubic root of 521232541 is about 804.7799977482.

Adding to 521232541 its reverse (145232125), we get a palindrome (666464666).

The spelling of 521232541 in words is "five hundred twenty-one million, two hundred thirty-two thousand, five hundred forty-one".