601501015501 has 2 divisors, whose sum is σ = 601501015502. Its totient is φ = 601501015500.

The previous prime is 601501015469. The next prime is 601501015567. The reversal of 601501015501 is 105510105106.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 343482733476 + 258018282025 = 586074^2 + 507955^2 .

It is a cyclic number.

It is not a de Polignac number, because 601501015501 - 2⁵ = 601501015469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (601501015201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300750507750 + 300750507751.

It is an arithmetic number, because the mean of its divisors is an integer number (300750507751).

Almost surely, 2^601501015501 is an apocalyptic number.

It is an amenable number.

601501015501 is a deficient number, since it is larger than the sum of its proper divisors (1).

601501015501 is an equidigital number, since it uses as much as digits as its factorization.

601501015501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 601501015501 in words is "six hundred one billion, five hundred one million, fifteen thousand, five hundred one".