53973519 has 4 divisors (see below), whose sum is σ = 71964696. Its totient is φ = 35982344.

The previous prime is 53973503. The next prime is 53973523. The reversal of 53973519 is 91537935.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53973519 - 2⁴ = 53973503 is a prime.

It is a super-2 number, since 2×53973519² = 5826281506486722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53973529) 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, 8995584 + ... + 8995589.

It is an arithmetic number, because the mean of its divisors is an integer number (17991174).

Almost surely, 2^53973519 is an apocalyptic number.

53973519 is a deficient number, since it is larger than the sum of its proper divisors (17991177).

53973519 is a wasteful number, since it uses less digits than its factorization.

53973519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17991176.

The product of its digits is 127575, while the sum is 42.

The square root of 53973519 is about 7346.6672035692. The cubic root of 53973519 is about 377.9145197378.

The spelling of 53973519 in words is "fifty-three million, nine hundred seventy-three thousand, five hundred nineteen".