53501402521 has 8 divisors (see below), whose sum is σ = 63252889920. Its totient is φ = 44277022608.

The previous prime is 53501402501. The next prime is 53501402533. The reversal of 53501402521 is 12520410535.

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

It is not a de Polignac number, because 53501402521 - 2²³ = 53493013913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53501402521.

It is not an unprimeable number, because it can be changed into a prime (53501402501) 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, 131776651 + ... + 131777056.

It is an arithmetic number, because the mean of its divisors is an integer number (7906611240).

Almost surely, 2^53501402521 is an apocalyptic number.

It is an amenable number.

53501402521 is a deficient number, since it is larger than the sum of its proper divisors (9751487399).

53501402521 is a wasteful number, since it uses less digits than its factorization.

53501402521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263553743.

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 53501402521 in words is "fifty-three billion, five hundred one million, four hundred two thousand, five hundred twenty-one".