510148981 has 2 divisors, whose sum is σ = 510148982. Its totient is φ = 510148980.

The previous prime is 510148957. The next prime is 510148999. The reversal of 510148981 is 189841015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 482680900 + 27468081 = 21970^2 + 5241^2 .

It is a cyclic number.

It is not a de Polignac number, because 510148981 - 2¹³ = 510140789 is a prime.

It is a super-2 number, since 2×510148981² = 520503965630676722, which contains 22 as substring.

It is a Chen prime.

It is equal to p_26861644 and since 510148981 and 26861644 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 510148981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (510148181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255074490 + 255074491.

It is an arithmetic number, because the mean of its divisors is an integer number (255074491).

Almost surely, 2^510148981 is an apocalyptic number.

It is an amenable number.

510148981 is a deficient number, since it is larger than the sum of its proper divisors (1).

510148981 is an equidigital number, since it uses as much as digits as its factorization.

510148981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 37.

The square root of 510148981 is about 22586.4778352004. The cubic root of 510148981 is about 799.0347634706.

Adding to 510148981 its reverse (189841015), we get a palindrome (699989996).

It can be divided in two parts, 51014 and 8981, that added together give a palindrome (59995).

The spelling of 510148981 in words is "five hundred ten million, one hundred forty-eight thousand, nine hundred eighty-one".