53821406 has 8 divisors (see below), whose sum is σ = 80873760. Its totient is φ = 26863488.

The previous prime is 53821387. The next prime is 53821429. The reversal of 53821406 is 60412835.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22166 + ... + 24473.

It is an arithmetic number, because the mean of its divisors is an integer number (10109220).

Almost surely, 2^53821406 is an apocalyptic number.

53821406 is a deficient number, since it is larger than the sum of its proper divisors (27052354).

53821406 is a wasteful number, since it uses less digits than its factorization.

53821406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47218.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 53821406 is about 7336.3073817827. The cubic root of 53821406 is about 377.5591615244.

The spelling of 53821406 in words is "fifty-three million, eight hundred twenty-one thousand, four hundred six".