100558397 has 4 divisors (see below), whose sum is σ = 100654236. Its totient is φ = 100462560.

The previous prime is 100558321. The next prime is 100558433. The reversal of 100558397 is 793855001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38763076 + 61795321 = 6226^2 + 7861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100558397 is a prime.

It is a super-2 number, since 2×100558397² = 20223982414419218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100558397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100558307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46328 + ... + 48449.

It is an arithmetic number, because the mean of its divisors is an integer number (25163559).

Almost surely, 2^100558397 is an apocalyptic number.

It is an amenable number.

100558397 is a deficient number, since it is larger than the sum of its proper divisors (95839).

100558397 is an equidigital number, since it uses as much as digits as its factorization.

100558397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95838.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 100558397 is about 10027.8809825406. The cubic root of 100558397 is about 465.0212300015.

The spelling of 100558397 in words is "one hundred million, five hundred fifty-eight thousand, three hundred ninety-seven".