507006981 has 24 divisors (see below), whose sum is σ = 796068000. Its totient is φ = 309080736.

The previous prime is 507006977. The next prime is 507006989. The reversal of 507006981 is 189600705.

It is not a de Polignac number, because 507006981 - 2² = 507006977 is a prime.

It is a super-2 number, since 2×507006981² = 514112157565468722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (507006989) 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 23 ways as a sum of consecutive naturals, for example, 7731 + ... + 32768.

It is an arithmetic number, because the mean of its divisors is an integer number (33169500).

Almost surely, 2^507006981 is an apocalyptic number.

It is an amenable number.

507006981 is a deficient number, since it is larger than the sum of its proper divisors (289061019).

507006981 is a wasteful number, since it uses less digits than its factorization.

507006981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40625 (or 40622 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 507006981 is about 22516.8155164091. The cubic root of 507006981 is about 797.3909697220.

The spelling of 507006981 in words is "five hundred seven million, six thousand, nine hundred eighty-one".