7471881 has 12 divisors (see below), whose sum is σ = 11056500. Its totient is φ = 4859520.

The previous prime is 7471873. The next prime is 7471889. The reversal of 7471881 is 1881747.

It is an interprime number because it is at equal distance from previous prime (7471873) and next prime (7471889).

It can be written as a sum of positive squares in 2 ways, for example, as 1121481 + 6350400 = 1059^2 + 2520^2 .

It is not a de Polignac number, because 7471881 - 2³ = 7471873 is a prime.

It is a super-2 number, since 2×7471881² = 111658011356322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7471889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9756 + ... + 10493.

It is an arithmetic number, because the mean of its divisors is an integer number (921375).

Almost surely, 2^7471881 is an apocalyptic number.

It is an amenable number.

7471881 is a deficient number, since it is larger than the sum of its proper divisors (3584619).

7471881 is a wasteful number, since it uses less digits than its factorization.

7471881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20296 (or 20293 counting only the distinct ones).

The product of its digits is 12544, while the sum is 36.

The square root of 7471881 is about 2733.4741630387. The cubic root of 7471881 is about 195.4984486722.

It can be divided in two parts, 747 and 1881, that added together give a triangular number (2628 = T₇₂).

The spelling of 7471881 in words is "seven million, four hundred seventy-one thousand, eight hundred eighty-one".