2151177285 has 16 divisors (see below), whose sum is σ = 3475964160. Its totient is φ = 1135934400.

The previous prime is 2151177277. The next prime is 2151177289. The reversal of 2151177285 is 5827711512.

It is not a de Polignac number, because 2151177285 - 2³ = 2151177277 is a prime.

It is a super-2 number, since 2×2151177285² = 9255127422999942450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151177289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 708445 + ... + 711474.

It is an arithmetic number, because the mean of its divisors is an integer number (217247760).

Almost surely, 2^2151177285 is an apocalyptic number.

It is an amenable number.

2151177285 is a deficient number, since it is larger than the sum of its proper divisors (1324786875).

2151177285 is a wasteful number, since it uses less digits than its factorization.

2151177285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420028.

The product of its digits is 39200, while the sum is 39.

The square root of 2151177285 is about 46380.7857307312. The cubic root of 2151177285 is about 1290.8984156804.

Adding to 2151177285 its reverse (5827711512), we get a palindrome (7978888797).

The spelling of 2151177285 in words is "two billion, one hundred fifty-one million, one hundred seventy-seven thousand, two hundred eighty-five".