53850021 has 8 divisors (see below), whose sum is σ = 72811584. Its totient is φ = 35394240.

The previous prime is 53850019. The next prime is 53850029. The reversal of 53850021 is 12005835.

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

It is not a de Polignac number, because 53850021 - 2¹ = 53850019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53849973 and 53850000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53850029) 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, 126196 + ... + 126621.

It is an arithmetic number, because the mean of its divisors is an integer number (9101448).

Almost surely, 2^53850021 is an apocalyptic number.

It is an amenable number.

53850021 is a deficient number, since it is larger than the sum of its proper divisors (18961563).

53850021 is a wasteful number, since it uses less digits than its factorization.

53850021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252891.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 53850021 is about 7338.2573544405. The cubic root of 53850021 is about 377.6260614321.

Adding to 53850021 its reverse (12005835), we get a palindrome (65855856).

The spelling of 53850021 in words is "fifty-three million, eight hundred fifty thousand, twenty-one".