411530021 has 16 divisors (see below), whose sum is σ = 483950976. Its totient is φ = 342553536.

The previous prime is 411529967. The next prime is 411530027. The reversal of 411530021 is 120035114.

It is a cyclic number.

It is not a de Polignac number, because 411530021 - 2¹⁴ = 411513637 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 (411530027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174170 + ... + 176516.

It is an arithmetic number, because the mean of its divisors is an integer number (30246936).

Almost surely, 2^411530021 is an apocalyptic number.

It is an amenable number.

411530021 is a deficient number, since it is larger than the sum of its proper divisors (72420955).

411530021 is a wasteful number, since it uses less digits than its factorization.

411530021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3068.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 411530021 is about 20286.2027250050. The cubic root of 411530021 is about 743.8188396984.

Adding to 411530021 its reverse (120035114), we get a palindrome (531565135).

The spelling of 411530021 in words is "four hundred eleven million, five hundred thirty thousand, twenty-one".