53421973 has 16 divisors (see below), whose sum is σ = 63840960. Its totient is φ = 44128000.

The previous prime is 53421971. The next prime is 53422003. The reversal of 53421973 is 37912435.

It is a cyclic number.

It is not a de Polignac number, because 53421973 - 2¹ = 53421971 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 (53421971) 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, 498 + ... + 10348.

It is an arithmetic number, because the mean of its divisors is an integer number (3990060).

Almost surely, 2^53421973 is an apocalyptic number.

It is an amenable number.

53421973 is a deficient number, since it is larger than the sum of its proper divisors (10418987).

53421973 is a wasteful number, since it uses less digits than its factorization.

53421973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9908.

The product of its digits is 22680, while the sum is 34.

The square root of 53421973 is about 7309.0336570575. The cubic root of 53421973 is about 376.6228289320.

The spelling of 53421973 in words is "fifty-three million, four hundred twenty-one thousand, nine hundred seventy-three".