501612145 has 8 divisors (see below), whose sum is σ = 618203304. Its totient is φ = 390443904.

The previous prime is 501612143. The next prime is 501612187. The reversal of 501612145 is 541216105.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 45319824 + 456292321 = 6732^2 + 21361^2 .

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 501612145 - 2¹ = 501612143 is a prime.

It is a super-2 number, since 2×501612145² = 503229488023002050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (501612143) 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, 1355524 + ... + 1355893.

It is an arithmetic number, because the mean of its divisors is an integer number (77275413).

Almost surely, 2^501612145 is an apocalyptic number.

It is an amenable number.

501612145 is a deficient number, since it is larger than the sum of its proper divisors (116591159).

501612145 is a wasteful number, since it uses less digits than its factorization.

501612145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2711459.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 501612145 is about 22396.6994220131. The cubic root of 501612145 is about 794.5526510295.

It can be divided in two parts, 5016 and 12145, that added together give a square (17161 = 131²).

The spelling of 501612145 in words is "five hundred one million, six hundred twelve thousand, one hundred forty-five".