524032021 has 4 divisors (see below), whose sum is σ = 554857452. Its totient is φ = 493206592.

The previous prime is 524032009. The next prime is 524032031. The reversal of 524032021 is 120230425.

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

It can be written as a sum of positive squares in 2 ways, for example, as 462723121 + 61308900 = 21511^2 + 7830^2 .

It is a cyclic number.

It is not a de Polignac number, because 524032021 - 2⁹ = 524031509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 524032021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (524032031) 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, 15412690 + ... + 15412723.

It is an arithmetic number, because the mean of its divisors is an integer number (138714363).

Almost surely, 2^524032021 is an apocalyptic number.

It is an amenable number.

524032021 is a deficient number, since it is larger than the sum of its proper divisors (30825431).

524032021 is a wasteful number, since it uses less digits than its factorization.

524032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30825430.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 524032021 is about 22891.7456957743. The cubic root of 524032021 is about 806.2182195594.

Adding to 524032021 its reverse (120230425), we get a palindrome (644262446).

It can be divided in two parts, 52403202 and 1, that added together give a triangular number (52403203 = T₁₀₂₃₇).

The spelling of 524032021 in words is "five hundred twenty-four million, thirty-two thousand, twenty-one".