59518021 has 2 divisors, whose sum is σ = 59518022. Its totient is φ = 59518020.

The previous prime is 59518007. The next prime is 59518057. The reversal of 59518021 is 12081595.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37380996 + 22137025 = 6114^2 + 4705^2 .

It is a cyclic number.

It is not a de Polignac number, because 59518021 - 2⁹ = 59517509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (59518091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29759010 + 29759011.

It is an arithmetic number, because the mean of its divisors is an integer number (29759011).

Almost surely, 2^59518021 is an apocalyptic number.

It is an amenable number.

59518021 is a deficient number, since it is larger than the sum of its proper divisors (1).

59518021 is an equidigital number, since it uses as much as digits as its factorization.

59518021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 59518021 is about 7714.7923497655. The cubic root of 59518021 is about 390.4356757302.

The spelling of 59518021 in words is "fifty-nine million, five hundred eighteen thousand, twenty-one".