53142913 has 4 divisors (see below), whose sum is σ = 53213508. Its totient is φ = 53072320.

The previous prime is 53142911. The next prime is 53142919. The reversal of 53142913 is 31924135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31924135 = 5 ⋅6384827.

It can be written as a sum of positive squares in 2 ways, for example, as 1129969 + 52012944 = 1063^2 + 7212^2 .

It is a cyclic number.

It is not a de Polignac number, because 53142913 - 2¹ = 53142911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53142911) 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, 34156 + ... + 35677.

It is an arithmetic number, because the mean of its divisors is an integer number (13303377).

Almost surely, 2^53142913 is an apocalyptic number.

It is an amenable number.

53142913 is a deficient number, since it is larger than the sum of its proper divisors (70595).

53142913 is an equidigital number, since it uses as much as digits as its factorization.

53142913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70594.

The product of its digits is 3240, while the sum is 28.

The square root of 53142913 is about 7289.9185866510. The cubic root of 53142913 is about 375.9658963523.

The spelling of 53142913 in words is "fifty-three million, one hundred forty-two thousand, nine hundred thirteen".