871122461 has 4 divisors (see below), whose sum is σ = 950315424. Its totient is φ = 791929500.

The previous prime is 871122443. The next prime is 871122463. The reversal of 871122461 is 164221178.

It is a happy number.

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 not a de Polignac number, because 871122461 - 2¹⁴ = 871106077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871122463) 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, 39596465 + ... + 39596486.

It is an arithmetic number, because the mean of its divisors is an integer number (237578856).

Almost surely, 2^871122461 is an apocalyptic number.

It is an amenable number.

871122461 is a deficient number, since it is larger than the sum of its proper divisors (79192963).

871122461 is a wasteful number, since it uses less digits than its factorization.

871122461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79192962.

The product of its digits is 5376, while the sum is 32.

The square root of 871122461 is about 29514.7837701719. The cubic root of 871122461 is about 955.0506487031.

The spelling of 871122461 in words is "eight hundred seventy-one million, one hundred twenty-two thousand, four hundred sixty-one".