601552421 has 2 divisors, whose sum is σ = 601552422. Its totient is φ = 601552420.

The previous prime is 601552411. The next prime is 601552453. The reversal of 601552421 is 124255106.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600936196 + 616225 = 24514^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 601552421 - 2¹⁰ = 601551397 is a prime.

It is a super-2 number, since 2×601552421² = 723730630421922482, which contains 22 as substring.

It is a Chen prime.

It is equal to p_31401674 and since 601552421 and 31401674 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (601552411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300776210 + 300776211.

It is an arithmetic number, because the mean of its divisors is an integer number (300776211).

Almost surely, 2^601552421 is an apocalyptic number.

It is an amenable number.

601552421 is a deficient number, since it is larger than the sum of its proper divisors (1).

601552421 is an equidigital number, since it uses as much as digits as its factorization.

601552421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 601552421 is about 24526.5656177134. The cubic root of 601552421 is about 844.1594624875.

The spelling of 601552421 in words is "six hundred one million, five hundred fifty-two thousand, four hundred twenty-one".