252122511530 has 16 divisors (see below), whose sum is σ = 477705811680. Its totient is φ = 95541162192.

The previous prime is 252122511527. The next prime is 252122511551. The reversal of 252122511530 is 35115221252.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 252122511493 and 252122511502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663480104 + ... + 663480483.

It is an arithmetic number, because the mean of its divisors is an integer number (29856613230).

Almost surely, 2^252122511530 is an apocalyptic number.

252122511530 is a deficient number, since it is larger than the sum of its proper divisors (225583300150).

252122511530 is a wasteful number, since it uses less digits than its factorization.

252122511530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326960613.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 252122511530 its reverse (35115221252), we get a palindrome (287237732782).

The spelling of 252122511530 in words is "two hundred fifty-two billion, one hundred twenty-two million, five hundred eleven thousand, five hundred thirty".