413691521 has 2 divisors, whose sum is σ = 413691522. Its totient is φ = 413691520.

The previous prime is 413691493. The next prime is 413691533. The reversal of 413691521 is 125196314.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250873921 + 162817600 = 15839^2 + 12760^2 .

It is a cyclic number.

It is not a de Polignac number, because 413691521 - 2⁶ = 413691457 is a prime.

It is a super-2 number, since 2×413691521² = 342281349094586882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (413691121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206845760 + 206845761.

It is an arithmetic number, because the mean of its divisors is an integer number (206845761).

Almost surely, 2^413691521 is an apocalyptic number.

It is an amenable number.

413691521 is a deficient number, since it is larger than the sum of its proper divisors (1).

413691521 is an equidigital number, since it uses as much as digits as its factorization.

413691521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 413691521 is about 20339.4080788994. The cubic root of 413691521 is about 745.1188321473.

The spelling of 413691521 in words is "four hundred thirteen million, six hundred ninety-one thousand, five hundred twenty-one".