53443919 has 8 divisors (see below), whose sum is σ = 54211872. Its totient is φ = 52680960.

The previous prime is 53443913. The next prime is 53443931. The reversal of 53443919 is 91934435.

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

It is a cyclic number.

It is not a de Polignac number, because 53443919 - 2²⁴ = 36666703 is a prime.

It is a super-2 number, since 2×53443919² = 5712504956157122, 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 (53443913) 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, 23747 + ... + 25899.

It is an arithmetic number, because the mean of its divisors is an integer number (6776484).

Almost surely, 2^53443919 is an apocalyptic number.

53443919 is a deficient number, since it is larger than the sum of its proper divisors (767953).

53443919 is a wasteful number, since it uses less digits than its factorization.

53443919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497.

The product of its digits is 58320, while the sum is 38.

The square root of 53443919 is about 7310.5347957588. The cubic root of 53443919 is about 376.6743946866.

The spelling of 53443919 in words is "fifty-three million, four hundred forty-three thousand, nine hundred nineteen".