162520531 has 4 divisors (see below), whose sum is σ = 165184864. Its totient is φ = 159856200.

The previous prime is 162520517. The next prime is 162520537. The reversal of 162520531 is 135025261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 162520531 - 2⁹ = 162520019 is a prime.

It is a super-2 number, since 2×162520531² = 52825845993043922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 162520496 and 162520505.

It is not an unprimeable number, because it can be changed into a prime (162520537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332075 + ... + 1332196.

It is an arithmetic number, because the mean of its divisors is an integer number (41296216).

Almost surely, 2^162520531 is an apocalyptic number.

162520531 is a deficient number, since it is larger than the sum of its proper divisors (2664333).

162520531 is an equidigital number, since it uses as much as digits as its factorization.

162520531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664332.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 162520531 is about 12748.3540506216. The cubic root of 162520531 is about 545.7194224984.

Adding to 162520531 its reverse (135025261), we get a palindrome (297545792).

The spelling of 162520531 in words is "one hundred sixty-two million, five hundred twenty thousand, five hundred thirty-one".