100261401 has 4 divisors (see below), whose sum is σ = 133681872. Its totient is φ = 66840932.

The previous prime is 100261391. The next prime is 100261417. The reversal of 100261401 is 104162001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104162001 = 3 ⋅34720667.

It is a cyclic number.

It is not a de Polignac number, because 100261401 - 2¹⁸ = 99999257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100261201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16710231 + ... + 16710236.

It is an arithmetic number, because the mean of its divisors is an integer number (33420468).

Almost surely, 2^100261401 is an apocalyptic number.

It is an amenable number.

100261401 is a deficient number, since it is larger than the sum of its proper divisors (33420471).

100261401 is an equidigital number, since it uses as much as digits as its factorization.

100261401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33420470.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 100261401 is about 10013.0615198350. The cubic root of 100261401 is about 464.5629701242.

The spelling of 100261401 in words is "one hundred million, two hundred sixty-one thousand, four hundred one".