601115540 has 36 divisors (see below), whose sum is σ = 1332294516. Its totient is φ = 227788416.

The previous prime is 601115531. The next prime is 601115549. The reversal of 601115540 is 45511106.

It is an interprime number because it is at equal distance from previous prime (601115531) and next prime (601115549).

It can be written as a sum of positive squares in 2 ways, for example, as 385965316 + 215150224 = 19646^2 + 14668^2 .

It is a super-2 number, since 2×601115540² = 722679784858983200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (601115549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34409 + ... + 48848.

It is an arithmetic number, because the mean of its divisors is an integer number (37008181).

Almost surely, 2^601115540 is an apocalyptic number.

It is an amenable number.

601115540 is an abundant number, since it is smaller than the sum of its proper divisors (731178976).

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

601115540 is a wasteful number, since it uses less digits than its factorization.

601115540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83304 (or 83283 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 601115540 is about 24517.6577184689. The cubic root of 601115540 is about 843.9550543962.

Adding to 601115540 its reverse (45511106), we get a palindrome (646626646).

The spelling of 601115540 in words is "six hundred one million, one hundred fifteen thousand, five hundred forty".