2177485156 has 48 divisors (see below), whose sum is σ = 4754534400. Its totient is φ = 847717920.

The previous prime is 2177485153. The next prime is 2177485157. The reversal of 2177485156 is 6515847712.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2177485153) 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 15 ways as a sum of consecutive naturals, for example, 658395 + ... + 661693.

It is an arithmetic number, because the mean of its divisors is an integer number (99052800).

Almost surely, 2^2177485156 is an apocalyptic number.

It is an amenable number.

2177485156 is an abundant number, since it is smaller than the sum of its proper divisors (2577049244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2177485156 is a wasteful number, since it uses less digits than its factorization.

2177485156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5464 (or 5462 counting only the distinct ones).

The product of its digits is 470400, while the sum is 46.

The square root of 2177485156 is about 46663.5313280082. The cubic root of 2177485156 is about 1296.1394652852.

The spelling of 2177485156 in words is "two billion, one hundred seventy-seven million, four hundred eighty-five thousand, one hundred fifty-six".