52142317 has 4 divisors (see below), whose sum is σ = 53251776. Its totient is φ = 51032860.

The previous prime is 52142309. The next prime is 52142333. The reversal of 52142317 is 71324125.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52142317 - 2³ = 52142309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52142291 and 52142300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52142347) 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, 554659 + ... + 554752.

It is an arithmetic number, because the mean of its divisors is an integer number (13312944).

Almost surely, 2^52142317 is an apocalyptic number.

It is an amenable number.

52142317 is a deficient number, since it is larger than the sum of its proper divisors (1109459).

52142317 is a wasteful number, since it uses less digits than its factorization.

52142317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109458.

The product of its digits is 1680, while the sum is 25.

The square root of 52142317 is about 7220.9637168456. The cubic root of 52142317 is about 373.5913181935.

The spelling of 52142317 in words is "fifty-two million, one hundred forty-two thousand, three hundred seventeen".