53505452021 has 8 divisors (see below), whose sum is σ = 61236324864. Its totient is φ = 45796388400.

The previous prime is 53505452017. The next prime is 53505452059. The reversal of 53505452021 is 12025450535.

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

It is not a de Polignac number, because 53505452021 - 2² = 53505452017 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 (53505452321) 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, 5447045 + ... + 5456858.

It is an arithmetic number, because the mean of its divisors is an integer number (7654540608).

Almost surely, 2^53505452021 is an apocalyptic number.

It is an amenable number.

53505452021 is a deficient number, since it is larger than the sum of its proper divisors (7730872843).

53505452021 is a wasteful number, since it uses less digits than its factorization.

53505452021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10904611.

The product of its (nonzero) digits is 30000, while the sum is 32.

The spelling of 53505452021 in words is "fifty-three billion, five hundred five million, four hundred fifty-two thousand, twenty-one".