2151505270 has 16 divisors (see below), whose sum is σ = 3873871008. Its totient is φ = 860344000.

The previous prime is 2151505247. The next prime is 2151505271. The reversal of 2151505270 is 725051512.

2151505270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 4770 + ... + 65770.

It is an arithmetic number, because the mean of its divisors is an integer number (242116938).

Almost surely, 2^2151505270 is an apocalyptic number.

2151505270 is a deficient number, since it is larger than the sum of its proper divisors (1722365738).

2151505270 is a wasteful number, since it uses less digits than its factorization.

2151505270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64535.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 2151505270 is about 46384.3213812599. The cubic root of 2151505270 is about 1290.9640191066.

Adding to 2151505270 its reverse (725051512), we get a palindrome (2876556782).

It can be divided in two parts, 2151505 and 270, that added together give a triangular number (2151775 = T₂₀₇₄).

The spelling of 2151505270 in words is "two billion, one hundred fifty-one million, five hundred five thousand, two hundred seventy".