162566537 has 4 divisors (see below), whose sum is σ = 185790336. Its totient is φ = 139342740.

The previous prime is 162566533. The next prime is 162566549. The reversal of 162566537 is 735665261.

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 162566537 - 2² = 162566533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 162566494 and 162566503.

It is not an unprimeable number, because it can be changed into a prime (162566533) 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, 11611889 + ... + 11611902.

It is an arithmetic number, because the mean of its divisors is an integer number (46447584).

Almost surely, 2^162566537 is an apocalyptic number.

It is an amenable number.

162566537 is a deficient number, since it is larger than the sum of its proper divisors (23223799).

162566537 is an equidigital number, since it uses as much as digits as its factorization.

162566537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23223798.

The product of its digits is 226800, while the sum is 41.

The square root of 162566537 is about 12750.1583127426. The cubic root of 162566537 is about 545.7709113758.

The spelling of 162566537 in words is "one hundred sixty-two million, five hundred sixty-six thousand, five hundred thirty-seven".