415581121 has 2 divisors, whose sum is σ = 415581122. Its totient is φ = 415581120.

The previous prime is 415581037. The next prime is 415581137. The reversal of 415581121 is 121185514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 398441521 + 17139600 = 19961^2 + 4140^2 .

It is a cyclic number.

It is not a de Polignac number, because 415581121 - 2⁷ = 415580993 is a prime.

It is equal to p_22122199 and since 415581121 and 22122199 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 415581121.

It is not a weakly prime, because it can be changed into another prime (415587121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207790560 + 207790561.

It is an arithmetic number, because the mean of its divisors is an integer number (207790561).

Almost surely, 2^415581121 is an apocalyptic number.

It is an amenable number.

415581121 is a deficient number, since it is larger than the sum of its proper divisors (1).

415581121 is an equidigital number, since it uses as much as digits as its factorization.

415581121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1600, while the sum is 28.

The square root of 415581121 is about 20385.8068518271. The cubic root of 415581121 is about 746.2515910432.

The spelling of 415581121 in words is "four hundred fifteen million, five hundred eighty-one thousand, one hundred twenty-one".