412271521 has 4 divisors (see below), whose sum is σ = 412428544. Its totient is φ = 412114500.

The previous prime is 412271507. The next prime is 412271537. The reversal of 412271521 is 125172214.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-412271521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (412272521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74505 + ... + 79846.

It is an arithmetic number, because the mean of its divisors is an integer number (103107136).

Almost surely, 2^412271521 is an apocalyptic number.

It is an amenable number.

412271521 is a deficient number, since it is larger than the sum of its proper divisors (157023).

412271521 is a wasteful number, since it uses less digits than its factorization.

412271521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157022.

The product of its digits is 1120, while the sum is 25.

The square root of 412271521 is about 20304.4704683476. The cubic root of 412271521 is about 744.2653123852.

The spelling of 412271521 in words is "four hundred twelve million, two hundred seventy-one thousand, five hundred twenty-one".