501125609 has 8 divisors (see below), whose sum is σ = 541893888. Its totient is φ = 461611840.

The previous prime is 501125593. The next prime is 501125623. The reversal of 501125609 is 906521105.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 501125609 - 2⁴ = 501125593 is a prime.

It is a super-2 number, since 2×501125609² = 502253751991241762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (501125689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312797 + ... + 314394.

It is an arithmetic number, because the mean of its divisors is an integer number (67736736).

Almost surely, 2^501125609 is an apocalyptic number.

It is an amenable number.

501125609 is a deficient number, since it is larger than the sum of its proper divisors (40768279).

501125609 is a wasteful number, since it uses less digits than its factorization.

501125609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627255.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 501125609 is about 22385.8350078794. The cubic root of 501125609 is about 794.2956772391.

The spelling of 501125609 in words is "five hundred one million, one hundred twenty-five thousand, six hundred nine".