53511521453 has 8 divisors (see below), whose sum is σ = 57635196696. Its totient is φ = 49388904000.

The previous prime is 53511521429. The next prime is 53511521551. The reversal of 53511521453 is 35412511535.

It can be written as a sum of positive squares in 4 ways, for example, as 1861232164 + 51650289289 = 43142^2 + 227267^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53511521453 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 (53511521153) 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, 157778 + ... + 363203.

It is an arithmetic number, because the mean of its divisors is an integer number (7204399587).

Almost surely, 2^53511521453 is an apocalyptic number.

It is an amenable number.

53511521453 is a deficient number, since it is larger than the sum of its proper divisors (4123675243).

53511521453 is a wasteful number, since it uses less digits than its factorization.

53511521453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528895.

The product of its digits is 45000, while the sum is 35.

The spelling of 53511521453 in words is "fifty-three billion, five hundred eleven million, five hundred twenty-one thousand, four hundred fifty-three".