415916261 has 4 divisors (see below), whose sum is σ = 417031692. Its totient is φ = 414800832.

The previous prime is 415916257. The next prime is 415916269. The reversal of 415916261 is 162619514.

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 205492225 + 210424036 = 14335^2 + 14506^2 .

It is a cyclic number.

It is not a de Polignac number, because 415916261 - 2² = 415916257 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 (415916269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557156 + ... + 557901.

It is an arithmetic number, because the mean of its divisors is an integer number (104257923).

Almost surely, 2^415916261 is an apocalyptic number.

It is an amenable number.

415916261 is a deficient number, since it is larger than the sum of its proper divisors (1115431).

415916261 is a wasteful number, since it uses less digits than its factorization.

415916261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115430.

The product of its digits is 12960, while the sum is 35.

The square root of 415916261 is about 20394.0251299247. The cubic root of 415916261 is about 746.4521387791.

The spelling of 415916261 in words is "four hundred fifteen million, nine hundred sixteen thousand, two hundred sixty-one".