100113551 has 2 divisors, whose sum is σ = 100113552. Its totient is φ = 100113550.

The previous prime is 100113487. The next prime is 100113553. The reversal of 100113551 is 155311001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100113551 - 2⁶ = 100113487 is a prime.

It is a Sophie Germain prime.

Together with 100113553, 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 (100113553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50056775 + 50056776.

It is an arithmetic number, because the mean of its divisors is an integer number (50056776).

Almost surely, 2^100113551 is an apocalyptic number.

100113551 is a deficient number, since it is larger than the sum of its proper divisors (1).

100113551 is an equidigital number, since it uses as much as digits as its factorization.

100113551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 100113551 is about 10005.6759391857. The cubic root of 100113551 is about 464.3345025901.

Adding to 100113551 its reverse (155311001), we get a palindrome (255424552).

The spelling of 100113551 in words is "one hundred million, one hundred thirteen thousand, five hundred fifty-one".