510420981 has 8 divisors (see below), whose sum is σ = 777784384. Its totient is φ = 291669120.

The previous prime is 510420979. The next prime is 510421007. The reversal of 510420981 is 189024015.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 510420981 - 2¹ = 510420979 is a prime.

It is a super-2 number, since 2×510420981² = 521059155690004722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (510420901) 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 7 ways as a sum of consecutive naturals, for example, 12152860 + ... + 12152901.

It is an arithmetic number, because the mean of its divisors is an integer number (97223048).

Almost surely, 2^510420981 is an apocalyptic number.

It is an amenable number.

510420981 is a deficient number, since it is larger than the sum of its proper divisors (267363403).

510420981 is a wasteful number, since it uses less digits than its factorization.

510420981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24305771.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 510420981 is about 22592.4983346243. The cubic root of 510420981 is about 799.1767473803.

Adding to 510420981 its reverse (189024015), we get a palindrome (699444996).

The spelling of 510420981 in words is "five hundred ten million, four hundred twenty thousand, nine hundred eighty-one".