53133135551 has 4 divisors (see below), whose sum is σ = 53167044672. Its totient is φ = 53099226432.

The previous prime is 53133135529. The next prime is 53133135557. The reversal of 53133135551 is 15553133135.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53133135551 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 (53133135557) 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, 16952210 + ... + 16955343.

It is an arithmetic number, because the mean of its divisors is an integer number (13291761168).

Almost surely, 2^53133135551 is an apocalyptic number.

53133135551 is a deficient number, since it is larger than the sum of its proper divisors (33909121).

53133135551 is a wasteful number, since it uses less digits than its factorization.

53133135551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33909120.

The product of its digits is 50625, while the sum is 35.

Adding to 53133135551 its reverse (15553133135), we get a palindrome (68686268686).

The spelling of 53133135551 in words is "fifty-three billion, one hundred thirty-three million, one hundred thirty-five thousand, five hundred fifty-one".