2153520351 has 20 divisors (see below), whose sum is σ = 3231063000. Its totient is φ = 1429398576.

The previous prime is 2153520269. The next prime is 2153520371. The reversal of 2153520351 is 1530253512.

It is a happy number.

It is not a de Polignac number, because 2153520351 - 2⁷ = 2153520223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153520371) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 39501 + ... + 76598.

It is an arithmetic number, because the mean of its divisors is an integer number (161553150).

Almost surely, 2^2153520351 is an apocalyptic number.

2153520351 is a deficient number, since it is larger than the sum of its proper divisors (1077542649).

2153520351 is a wasteful number, since it uses less digits than its factorization.

2153520351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116340 (or 116331 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 2153520351 is about 46406.0378722424. The cubic root of 2153520351 is about 1291.3669285451.

Adding to 2153520351 its reverse (1530253512), we get a palindrome (3683773863).

The spelling of 2153520351 in words is "two billion, one hundred fifty-three million, five hundred twenty thousand, three hundred fifty-one".