601313261 has 4 divisors (see below), whose sum is σ = 603017052. Its totient is φ = 599609472.

The previous prime is 601313243. The next prime is 601313269. The reversal of 601313261 is 162313106.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 162313106 = 2 ⋅81156553.

It can be written as a sum of positive squares in 2 ways, for example, as 272580100 + 328733161 = 16510^2 + 18131^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-601313261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (601313269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 851366 + ... + 852071.

It is an arithmetic number, because the mean of its divisors is an integer number (150754263).

Almost surely, 2^601313261 is an apocalyptic number.

It is an amenable number.

601313261 is a deficient number, since it is larger than the sum of its proper divisors (1703791).

601313261 is a wasteful number, since it uses less digits than its factorization.

601313261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703790.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 601313261 is about 24521.6896032879. The cubic root of 601313261 is about 844.0475764567.

Adding to 601313261 its reverse (162313106), we get a palindrome (763626367).

The spelling of 601313261 in words is "six hundred one million, three hundred thirteen thousand, two hundred sixty-one".