2153521350 has 48 divisors (see below), whose sum is σ = 5934151440. Its totient is φ = 574272000.

The previous prime is 2153521333. The next prime is 2153521421. The reversal of 2153521350 is 531253512.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 796251 + ... + 798950.

It is an arithmetic number, because the mean of its divisors is an integer number (123628155).

Almost surely, 2^2153521350 is an apocalyptic number.

2153521350 is an abundant number, since it is smaller than the sum of its proper divisors (3780630090).

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

2153521350 is a wasteful number, since it uses less digits than its factorization.

2153521350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595222 (or 1595211 counting only the distinct ones).

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

The square root of 2153521350 is about 46406.0486359268. The cubic root of 2153521350 is about 1291.3671282298.

Adding to 2153521350 its reverse (531253512), we get a palindrome (2684774862).

The spelling of 2153521350 in words is "two billion, one hundred fifty-three million, five hundred twenty-one thousand, three hundred fifty".