501121604 has 12 divisors (see below), whose sum is σ = 877861824. Its totient is φ = 250303944.

The previous prime is 501121589. The next prime is 501121627. The reversal of 501121604 is 406121105.

It is a super-2 number, since 2×501121604² = 502245723991065632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59792 + ... + 67655.

It is an arithmetic number, because the mean of its divisors is an integer number (73155152).

Almost surely, 2^501121604 is an apocalyptic number.

It is an amenable number.

501121604 is a deficient number, since it is larger than the sum of its proper divisors (376740220).

501121604 is a wasteful number, since it uses less digits than its factorization.

501121604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128434 (or 128432 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 501121604 is about 22385.7455538117. The cubic root of 501121604 is about 794.2935612276.

Adding to 501121604 its reverse (406121105), we get a palindrome (907242709).

The spelling of 501121604 in words is "five hundred one million, one hundred twenty-one thousand, six hundred four".