2151505272 has 64 divisors (see below), whose sum is σ = 6157912320. Its totient is φ = 613640448.

The previous prime is 2151505271. The next prime is 2151505277. The reversal of 2151505272 is 2725051512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151505271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87708 + ... + 109524.

It is an arithmetic number, because the mean of its divisors is an integer number (96217380).

Almost surely, 2^2151505272 is an apocalyptic number.

It is an amenable number.

2151505272 is an abundant number, since it is smaller than the sum of its proper divisors (4006407048).

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

2151505272 is a wasteful number, since it uses less digits than its factorization.

2151505272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22420 (or 22416 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 30.

The square root of 2151505272 is about 46384.3214028189. The cubic root of 2151505272 is about 1290.9640195066.

Adding to 2151505272 its reverse (2725051512), we get a palindrome (4876556784).

The spelling of 2151505272 in words is "two billion, one hundred fifty-one million, five hundred five thousand, two hundred seventy-two".