525413621 has 8 divisors (see below), whose sum is σ = 529980000. Its totient is φ = 520855920.

The previous prime is 525413617. The next prime is 525413639. The reversal of 525413621 is 126314525.

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 525413621 - 2² = 525413617 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 (525413671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189755 + ... + 192503.

It is an arithmetic number, because the mean of its divisors is an integer number (66247500).

Almost surely, 2^525413621 is an apocalyptic number.

It is an amenable number.

525413621 is a deficient number, since it is larger than the sum of its proper divisors (4566379).

525413621 is a wasteful number, since it uses less digits than its factorization.

525413621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4339.

The product of its digits is 7200, while the sum is 29.

The square root of 525413621 is about 22921.9026479043. The cubic root of 525413621 is about 806.9261238980.

The spelling of 525413621 in words is "five hundred twenty-five million, four hundred thirteen thousand, six hundred twenty-one".