2151520135 has 8 divisors (see below), whose sum is σ = 2606891040. Its totient is φ = 1704504864.

The previous prime is 2151520117. The next prime is 2151520139. The reversal of 2151520135 is 5310251512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2151520135 - 2⁵ = 2151520103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151520139) 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, 2088340 + ... + 2089369.

It is an arithmetic number, because the mean of its divisors is an integer number (325861380).

Almost surely, 2^2151520135 is an apocalyptic number.

2151520135 is a deficient number, since it is larger than the sum of its proper divisors (455370905).

2151520135 is a wasteful number, since it uses less digits than its factorization.

2151520135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4177817.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 2151520135 is about 46384.4816183171. The cubic root of 2151520135 is about 1290.9669922399.

Adding to 2151520135 its reverse (5310251512), we get a palindrome (7461771647).

The spelling of 2151520135 in words is "two billion, one hundred fifty-one million, five hundred twenty thousand, one hundred thirty-five".