53777406221 has 8 divisors (see below), whose sum is σ = 67047155904. Its totient is φ = 41904472320.

The previous prime is 53777406211. The next prime is 53777406227. The reversal of 53777406221 is 12260477735.

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

It is a cyclic number.

It is not a de Polignac number, because 53777406221 - 2¹⁰ = 53777405197 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 (53777406227) 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, 349203860 + ... + 349204013.

It is an arithmetic number, because the mean of its divisors is an integer number (8380894488).

Almost surely, 2^53777406221 is an apocalyptic number.

It is an amenable number.

53777406221 is a deficient number, since it is larger than the sum of its proper divisors (13269749683).

53777406221 is a wasteful number, since it uses less digits than its factorization.

53777406221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698407891.

The product of its (nonzero) digits is 493920, while the sum is 44.

The spelling of 53777406221 in words is "fifty-three billion, seven hundred seventy-seven million, four hundred six thousand, two hundred twenty-one".