507681001 has 4 divisors (see below), whose sum is σ = 529754112. Its totient is φ = 485607892.

The previous prime is 507680993. The next prime is 507681023. The reversal of 507681001 is 100186705.

It is a happy number.

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 not a de Polignac number, because 507681001 - 2³ = 507680993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (507681901) 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, 11036521 + ... + 11036566.

It is an arithmetic number, because the mean of its divisors is an integer number (132438528).

Almost surely, 2^507681001 is an apocalyptic number.

It is an amenable number.

507681001 is a deficient number, since it is larger than the sum of its proper divisors (22073111).

507681001 is a wasteful number, since it uses less digits than its factorization.

507681001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22073110.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 507681001 is about 22531.7775818953. Note that the first 3 decimals coincide. The cubic root of 507681001 is about 797.7441663512.

The spelling of 507681001 in words is "five hundred seven million, six hundred eighty-one thousand, one".