521262041 has 8 divisors (see below), whose sum is σ = 575921664. Its totient is φ = 469268800.

The previous prime is 521262023. The next prime is 521262043. The reversal of 521262041 is 140262125.

521262041 = 3899² + 3900² + ... + 3932².

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 521262041 - 2¹⁰ = 521261017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 521261998 and 521262016.

It is not an unprimeable number, because it can be changed into a prime (521262043) 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, 666185 + ... + 666966.

It is an arithmetic number, because the mean of its divisors is an integer number (71990208).

Almost surely, 2^521262041 is an apocalyptic number.

It is an amenable number.

521262041 is a deficient number, since it is larger than the sum of its proper divisors (54659623).

521262041 is a wasteful number, since it uses less digits than its factorization.

521262041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333191.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 521262041 is about 22831.1638117727. The cubic root of 521262041 is about 804.7951800710.

The spelling of 521262041 in words is "five hundred twenty-one million, two hundred sixty-two thousand, forty-one".