99581453 has 2 divisors, whose sum is σ = 99581454. Its totient is φ = 99581452.

The previous prime is 99581437. The next prime is 99581473. The reversal of 99581453 is 35418599.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92409769 + 7171684 = 9613^2 + 2678^2 .

It is a cyclic number.

It is not a de Polignac number, because 99581453 - 2⁴ = 99581437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99581473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49790726 + 49790727.

It is an arithmetic number, because the mean of its divisors is an integer number (49790727).

Almost surely, 2^99581453 is an apocalyptic number.

It is an amenable number.

99581453 is a deficient number, since it is larger than the sum of its proper divisors (1).

99581453 is an equidigital number, since it uses as much as digits as its factorization.

99581453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 44.

The square root of 99581453 is about 9979.0507063548. The cubic root of 99581453 is about 463.5104034264.

It can be divided in two parts, 9958 and 1453, that added together give a palindrome (11411).

The spelling of 99581453 in words is "ninety-nine million, five hundred eighty-one thousand, four hundred fifty-three".