871972755 has 32 divisors (see below), whose sum is σ = 1479124800. Its totient is φ = 437133312.

The previous prime is 871972733. The next prime is 871972763. The reversal of 871972755 is 557279178.

It is not a de Polignac number, because 871972755 - 2⁵ = 871972723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 871972698 and 871972707.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255601 + ... + 258989.

It is an arithmetic number, because the mean of its divisors is an integer number (46222650).

Almost surely, 2^871972755 is an apocalyptic number.

871972755 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

871972755 is a deficient number, since it is larger than the sum of its proper divisors (607152045).

871972755 is a wasteful number, since it uses less digits than its factorization.

871972755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423.

The product of its digits is 1234800, while the sum is 51.

The square root of 871972755 is about 29529.1848008034. The cubic root of 871972755 is about 955.3612861457.

The spelling of 871972755 in words is "eight hundred seventy-one million, nine hundred seventy-two thousand, seven hundred fifty-five".