54350821 has 4 divisors (see below), whose sum is σ = 62115232. Its totient is φ = 46586412.

The previous prime is 54350761. The next prime is 54350867. The reversal of 54350821 is 12805345.

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 54350821 - 2¹¹ = 54348773 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 54350821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54356821) 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, 3882195 + ... + 3882208.

It is an arithmetic number, because the mean of its divisors is an integer number (15528808).

Almost surely, 2^54350821 is an apocalyptic number.

It is an amenable number.

54350821 is a deficient number, since it is larger than the sum of its proper divisors (7764411).

54350821 is an equidigital number, since it uses as much as digits as its factorization.

54350821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7764410.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 54350821 is about 7372.3009298319. The cubic root of 54350821 is about 378.7930798010.

The spelling of 54350821 in words is "fifty-four million, three hundred fifty thousand, eight hundred twenty-one".