2151254215 has 32 divisors (see below), whose sum is σ = 2895927552. Its totient is φ = 1520544000.

The previous prime is 2151254213. The next prime is 2151254219. The reversal of 2151254215 is 5124521512.

It is not a de Polignac number, because 2151254215 - 2¹ = 2151254213 is a prime.

It is a super-3 number, since 3×2151254215³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151254213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 636480 + ... + 639850.

It is an arithmetic number, because the mean of its divisors is an integer number (90497736).

Almost surely, 2^2151254215 is an apocalyptic number.

2151254215 is a deficient number, since it is larger than the sum of its proper divisors (744673337).

2151254215 is a wasteful number, since it uses less digits than its factorization.

2151254215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711.

The product of its digits is 4000, while the sum is 28.

The square root of 2151254215 is about 46381.6150538120. The cubic root of 2151254215 is about 1290.9138037863.

Adding to 2151254215 its reverse (5124521512), we get a palindrome (7275775727).

The spelling of 2151254215 in words is "two billion, one hundred fifty-one million, two hundred fifty-four thousand, two hundred fifteen".