162399253 has 4 divisors (see below), whose sum is σ = 166788460. Its totient is φ = 158010048.

The previous prime is 162399233. The next prime is 162399269. The reversal of 162399253 is 352993261.

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

It can be written as a sum of positive squares in 2 ways, for example, as 157703364 + 4695889 = 12558^2 + 2167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162399253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162399203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2194548 + ... + 2194621.

It is an arithmetic number, because the mean of its divisors is an integer number (41697115).

Almost surely, 2^162399253 is an apocalyptic number.

It is an amenable number.

162399253 is a deficient number, since it is larger than the sum of its proper divisors (4389207).

162399253 is an equidigital number, since it uses as much as digits as its factorization.

162399253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4389206.

The product of its digits is 87480, while the sum is 40.

The square root of 162399253 is about 12743.5965488554. The cubic root of 162399253 is about 545.5836443102.

The spelling of 162399253 in words is "one hundred sixty-two million, three hundred ninety-nine thousand, two hundred fifty-three".