521241053 has 4 divisors (see below), whose sum is σ = 522541308. Its totient is φ = 519940800.

The previous prime is 521241047. The next prime is 521241059. The reversal of 521241053 is 350142125.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (521241047) and next prime (521241059).

It can be written as a sum of positive squares in 2 ways, for example, as 468852409 + 52388644 = 21653^2 + 7238^2 .

It is a cyclic number.

It is not a de Polignac number, because 521241053 - 2⁶ = 521240989 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 (521241059) 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, 649526 + ... + 650327.

It is an arithmetic number, because the mean of its divisors is an integer number (130635327).

Almost surely, 2^521241053 is an apocalyptic number.

It is an amenable number.

521241053 is a deficient number, since it is larger than the sum of its proper divisors (1300255).

521241053 is a wasteful number, since it uses less digits than its factorization.

521241053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300254.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 521241053 is about 22830.7041722326. The cubic root of 521241053 is about 804.7843785504.

Adding to 521241053 its reverse (350142125), we get a palindrome (871383178).

The spelling of 521241053 in words is "five hundred twenty-one million, two hundred forty-one thousand, fifty-three".