99958501 has 2 divisors, whose sum is σ = 99958502. Its totient is φ = 99958500.

The previous prime is 99958499. The next prime is 99958553. The reversal of 99958501 is 10585999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69322276 + 30636225 = 8326^2 + 5535^2 .

It is a cyclic number.

It is not a de Polignac number, because 99958501 - 2¹ = 99958499 is a prime.

Together with 99958499, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99958561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49979250 + 49979251.

It is an arithmetic number, because the mean of its divisors is an integer number (49979251).

Almost surely, 2^99958501 is an apocalyptic number.

It is an amenable number.

99958501 is a deficient number, since it is larger than the sum of its proper divisors (1).

99958501 is an equidigital number, since it uses as much as digits as its factorization.

99958501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 46.

The square root of 99958501 is about 9997.9248346844. The cubic root of 99958501 is about 464.0946673791.

It can be divided in two parts, 9995 and 8501, that added together give a square (18496 = 136²).

The spelling of 99958501 in words is "ninety-nine million, nine hundred fifty-eight thousand, five hundred one".