501749604 has 36 divisors (see below), whose sum is σ = 1282570380. Its totient is φ = 165369600.

The previous prime is 501749597. The next prime is 501749617. The reversal of 501749604 is 406947105.

501749604 is a `hidden beast` number, since 5 + 0 + 1 + 7 + 49 + 604 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 332697600 + 169052004 = 18240^2 + 13002^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×501749604² = 503505330228313632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75097 + ... + 81504.

It is an arithmetic number, because the mean of its divisors is an integer number (35626955).

Almost surely, 2^501749604 is an apocalyptic number.

It is an amenable number.

501749604 is an abundant number, since it is smaller than the sum of its proper divisors (780820776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

501749604 is a wasteful number, since it uses less digits than its factorization.

501749604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156700 (or 156695 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 501749604 is about 22399.7679452266. The cubic root of 501749604 is about 794.6252226627.

The spelling of 501749604 in words is "five hundred one million, seven hundred forty-nine thousand, six hundred four".