53719553 has 4 divisors (see below), whose sum is σ = 55029828. Its totient is φ = 52409280.

The previous prime is 53719537. The next prime is 53719573. The reversal of 53719553 is 35591735.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5166529 + 48553024 = 2273^2 + 6968^2 .

It is a cyclic number.

It is not a de Polignac number, because 53719553 - 2⁴ = 53719537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53719573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 655076 + ... + 655157.

It is an arithmetic number, because the mean of its divisors is an integer number (13757457).

Almost surely, 2^53719553 is an apocalyptic number.

It is an amenable number.

53719553 is a deficient number, since it is larger than the sum of its proper divisors (1310275).

53719553 is a wasteful number, since it uses less digits than its factorization.

53719553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310274.

The product of its digits is 70875, while the sum is 38.

The square root of 53719553 is about 7329.3623870020. The cubic root of 53719553 is about 377.3208436025.

The spelling of 53719553 in words is "fifty-three million, seven hundred nineteen thousand, five hundred fifty-three".