510012161 has 4 divisors (see below), whose sum is σ = 522451524. Its totient is φ = 497572800.

The previous prime is 510012157. The next prime is 510012169. The reversal of 510012161 is 161210015.

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 64000000 + 446012161 = 8000^2 + 21119^2 .

It is a cyclic number.

It is not a de Polignac number, because 510012161 - 2² = 510012157 is a prime.

It is a super-2 number, since 2×510012161² = 520224808735779842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (510012169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6219620 + ... + 6219701.

It is an arithmetic number, because the mean of its divisors is an integer number (130612881).

Almost surely, 2^510012161 is an apocalyptic number.

It is an amenable number.

510012161 is a deficient number, since it is larger than the sum of its proper divisors (12439363).

510012161 is a wasteful number, since it uses less digits than its factorization.

510012161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12439362.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 510012161 is about 22583.4488287330. The cubic root of 510012161 is about 798.9633243974.

Adding to 510012161 its reverse (161210015), we get a palindrome (671222176).

The spelling of 510012161 in words is "five hundred ten million, twelve thousand, one hundred sixty-one".