510000056161 has 4 divisors (see below), whose sum is σ = 536842164400. Its totient is φ = 483157947924.

The previous prime is 510000056131. The next prime is 510000056231. The reversal of 510000056161 is 161650000015.

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 a de Polignac number, because none of the positive numbers 2^k-510000056161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (510000056131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13421054091 + ... + 13421054128.

It is an arithmetic number, because the mean of its divisors is an integer number (134210541100).

Almost surely, 2^510000056161 is an apocalyptic number.

It is an amenable number.

510000056161 is a deficient number, since it is larger than the sum of its proper divisors (26842108239).

510000056161 is a wasteful number, since it uses less digits than its factorization.

510000056161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26842108238.

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 510000056161 its reverse (161650000015), we get a palindrome (671650056176).

The spelling of 510000056161 in words is "five hundred ten billion, fifty-six thousand, one hundred sixty-one".