601109261 has 2 divisors, whose sum is σ = 601109262. Its totient is φ = 601109260.

The previous prime is 601109233. The next prime is 601109309. The reversal of 601109261 is 162901106.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 500909161 + 100200100 = 22381^2 + 10010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-601109261 is a prime.

It is a super-2 number, since 2×601109261² = 722664687319932242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 601109261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (601009261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300554630 + 300554631.

It is an arithmetic number, because the mean of its divisors is an integer number (300554631).

Almost surely, 2^601109261 is an apocalyptic number.

It is an amenable number.

601109261 is a deficient number, since it is larger than the sum of its proper divisors (1).

601109261 is an equidigital number, since it uses as much as digits as its factorization.

601109261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 601109261 is about 24517.5296675664. The cubic root of 601109261 is about 843.9521158529.

The spelling of 601109261 in words is "six hundred one million, one hundred nine thousand, two hundred sixty-one".