53019693 has 6 divisors (see below), whose sum is σ = 76584014. Its totient is φ = 35346456.

The previous prime is 53019691. The next prime is 53019697. The reversal of 53019693 is 39691035.

It can be written as a sum of positive squares in only one way, i.e., 30008484 + 23011209 = 5478^2 + 4797^2 .

It is not a de Polignac number, because 53019693 - 2¹ = 53019691 is a prime.

It is a super-2 number, since 2×53019693² = 5622175691628498, 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 (53019691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2945530 + ... + 2945547.

Almost surely, 2^53019693 is an apocalyptic number.

It is an amenable number.

53019693 is a deficient number, since it is larger than the sum of its proper divisors (23564321).

53019693 is a wasteful number, since it uses less digits than its factorization.

53019693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5891083 (or 5891080 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 53019693 is about 7281.4622844591. The cubic root of 53019693 is about 375.6750932682.

The spelling of 53019693 in words is "fifty-three million, nineteen thousand, six hundred ninety-three".