53421835 has 16 divisors (see below), whose sum is σ = 66401280. Its totient is φ = 41217120.

The previous prime is 53421833. The next prime is 53421839. The reversal of 53421835 is 53812435.

It is not a de Polignac number, because 53421835 - 2¹ = 53421833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 53421797 and 53421806.

It is not an unprimeable number, because it can be changed into a prime (53421833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80736 + ... + 81394.

It is an arithmetic number, because the mean of its divisors is an integer number (4150080).

Almost surely, 2^53421835 is an apocalyptic number.

53421835 is a deficient number, since it is larger than the sum of its proper divisors (12979445).

53421835 is a wasteful number, since it uses less digits than its factorization.

53421835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218.

The product of its digits is 14400, while the sum is 31.

The square root of 53421835 is about 7309.0242166790. The cubic root of 53421835 is about 376.6225046335.

The spelling of 53421835 in words is "fifty-three million, four hundred twenty-one thousand, eight hundred thirty-five".