416043521 has 2 divisors, whose sum is σ = 416043522. Its totient is φ = 416043520.

The previous prime is 416043493. The next prime is 416043539. The reversal of 416043521 is 125340614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 254753521 + 161290000 = 15961^2 + 12700^2 .

It is a cyclic number.

It is not a de Polignac number, because 416043521 - 2²⁶ = 348934657 is a prime.

It is a super-2 number, since 2×416043521² = 346184422732154882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (416043581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208021760 + 208021761.

It is an arithmetic number, because the mean of its divisors is an integer number (208021761).

Almost surely, 2^416043521 is an apocalyptic number.

It is an amenable number.

416043521 is a deficient number, since it is larger than the sum of its proper divisors (1).

416043521 is an equidigital number, since it uses as much as digits as its factorization.

416043521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 416043521 is about 20397.1449227582. The cubic root of 416043521 is about 746.5282629265.

The spelling of 416043521 in words is "four hundred sixteen million, forty-three thousand, five hundred twenty-one".