53531520443 has 2 divisors, whose sum is σ = 53531520444. Its totient is φ = 53531520442.

The previous prime is 53531520437. The next prime is 53531520479. The reversal of 53531520443 is 34402513535.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53531520443 - 2³⁰ = 52457778619 is a prime.

It is not a weakly prime, because it can be changed into another prime (53531520743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26765760221 + 26765760222.

It is an arithmetic number, because the mean of its divisors is an integer number (26765760222).

Almost surely, 2^53531520443 is an apocalyptic number.

53531520443 is a deficient number, since it is larger than the sum of its proper divisors (1).

53531520443 is an equidigital number, since it uses as much as digits as its factorization.

53531520443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108000, while the sum is 35.

The spelling of 53531520443 in words is "fifty-three billion, five hundred thirty-one million, five hundred twenty thousand, four hundred forty-three".