53424381 has 4 divisors (see below), whose sum is σ = 71232512. Its totient is φ = 35616252.

The previous prime is 53424379. The next prime is 53424403. The reversal of 53424381 is 18342435.

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 not a de Polignac number, because 53424381 - 2¹ = 53424379 is a prime.

It is a super-2 number, since 2×53424381² = 5708328970466322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53424311) 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, 8904061 + ... + 8904066.

It is an arithmetic number, because the mean of its divisors is an integer number (17808128).

Almost surely, 2^53424381 is an apocalyptic number.

It is an amenable number.

53424381 is a deficient number, since it is larger than the sum of its proper divisors (17808131).

53424381 is a wasteful number, since it uses less digits than its factorization.

53424381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17808130.

The product of its digits is 11520, while the sum is 30.

The square root of 53424381 is about 7309.1983828598. The cubic root of 53424381 is about 376.6284876157.

The spelling of 53424381 in words is "fifty-three million, four hundred twenty-four thousand, three hundred eighty-one".