5252156509 has 2 divisors, whose sum is σ = 5252156510. Its totient is φ = 5252156508.

The previous prime is 5252156473. The next prime is 5252156519. The reversal of 5252156509 is 9056512525.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5122264900 + 129891609 = 71570^2 + 11397^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5252156509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5252156519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2626078254 + 2626078255.

It is an arithmetic number, because the mean of its divisors is an integer number (2626078255).

Almost surely, 2^5252156509 is an apocalyptic number.

It is an amenable number.

5252156509 is a deficient number, since it is larger than the sum of its proper divisors (1).

5252156509 is an equidigital number, since it uses as much as digits as its factorization.

5252156509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 5252156509 is about 72471.7635289773. The cubic root of 5252156509 is about 1738.2512607482.

The spelling of 5252156509 in words is "five billion, two hundred fifty-two million, one hundred fifty-six thousand, five hundred nine".