2135403551 has 4 divisors (see below), whose sum is σ = 2135514504. Its totient is φ = 2135292600.

The previous prime is 2135403539. The next prime is 2135403553. The reversal of 2135403551 is 1553045312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2135403551 - 2²² = 2131209247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135403553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18305 + ... + 67866.

It is an arithmetic number, because the mean of its divisors is an integer number (533878626).

Almost surely, 2^2135403551 is an apocalyptic number.

2135403551 is a deficient number, since it is larger than the sum of its proper divisors (110953).

2135403551 is an equidigital number, since it uses as much as digits as its factorization.

2135403551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110952.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 2135403551 is about 46210.4268645075. The cubic root of 2135403551 is about 1287.7354559290.

Adding to 2135403551 its reverse (1553045312), we get a palindrome (3688448863).

The spelling of 2135403551 in words is "two billion, one hundred thirty-five million, four hundred three thousand, five hundred fifty-one".