101890453 has 18 divisors (see below), whose sum is σ = 121585218. Its totient is φ = 85135680.

The previous prime is 101890441. The next prime is 101890513. The reversal of 101890453 is 354098101.

It can be written as a sum of positive squares in 3 ways, for example, as 142884 + 101747569 = 378^2 + 10087^2 .

It is not a de Polignac number, because 101890453 - 2¹⁷ = 101759381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101890403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 81751 + ... + 82987.

Almost surely, 2^101890453 is an apocalyptic number.

It is an amenable number.

101890453 is a deficient number, since it is larger than the sum of its proper divisors (19694765).

101890453 is an equidigital number, since it uses as much as digits as its factorization.

101890453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333 (or 1285 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 101890453 is about 10094.0800967696. The cubic root of 101890453 is about 467.0655450769.

The spelling of 101890453 in words is "one hundred one million, eight hundred ninety thousand, four hundred fifty-three".