54435503521 has 4 divisors (see below), whose sum is σ = 62212004032. Its totient is φ = 46659003012.

The previous prime is 54435503489. The next prime is 54435503539. The reversal of 54435503521 is 12530553445.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54435503521 - 2⁵ = 54435503489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54435503561) 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, 3888250245 + ... + 3888250258.

It is an arithmetic number, because the mean of its divisors is an integer number (15553001008).

Almost surely, 2^54435503521 is an apocalyptic number.

It is an amenable number.

54435503521 is a deficient number, since it is larger than the sum of its proper divisors (7776500511).

54435503521 is an equidigital number, since it uses as much as digits as its factorization.

54435503521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7776500510.

The product of its (nonzero) digits is 180000, while the sum is 37.

The spelling of 54435503521 in words is "fifty-four billion, four hundred thirty-five million, five hundred three thousand, five hundred twenty-one".