58989781 has 2 divisors, whose sum is σ = 58989782. Its totient is φ = 58989780.

The previous prime is 58989773. The next prime is 58989787. The reversal of 58989781 is 18798985.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44435556 + 14554225 = 6666^2 + 3815^2 .

It is a cyclic number.

It is not a de Polignac number, because 58989781 - 2³ = 58989773 is a prime.

It is a super-2 number, since 2×58989781² = 6959588524855922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (58989787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29494890 + 29494891.

It is an arithmetic number, because the mean of its divisors is an integer number (29494891).

Almost surely, 2^58989781 is an apocalyptic number.

It is an amenable number.

58989781 is a deficient number, since it is larger than the sum of its proper divisors (1).

58989781 is an equidigital number, since it uses as much as digits as its factorization.

58989781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 55.

The square root of 58989781 is about 7680.4805188217. The cubic root of 58989781 is about 389.2771642837.

The spelling of 58989781 in words is "fifty-eight million, nine hundred eighty-nine thousand, seven hundred eighty-one".