2135251453 has 8 divisors (see below), whose sum is σ = 2149808472. Its totient is φ = 2120744256.

The previous prime is 2135251409. The next prime is 2135251507. The reversal of 2135251453 is 3541525312.

It can be written as a sum of positive squares in 4 ways, for example, as 2474329 + 2132777124 = 1573^2 + 46182^2 .

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 2135251453 - 2¹³ = 2135243261 is a prime.

It is a super-2 number, since 2×2135251453² = 9118597535077222418, which contains 22 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 (2135251553) 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, 75651 + ... + 99967.

It is an arithmetic number, because the mean of its divisors is an integer number (268726059).

Almost surely, 2^2135251453 is an apocalyptic number.

It is an amenable number.

2135251453 is a deficient number, since it is larger than the sum of its proper divisors (14557019).

2135251453 is a wasteful number, since it uses less digits than its factorization.

2135251453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24911.

The product of its digits is 18000, while the sum is 31.

The square root of 2135251453 is about 46208.7811243707. The cubic root of 2135251453 is about 1287.7048814368.

Adding to 2135251453 its reverse (3541525312), we get a palindrome (5676776765).

The spelling of 2135251453 in words is "two billion, one hundred thirty-five million, two hundred fifty-one thousand, four hundred fifty-three".