100100551 has 2 divisors, whose sum is σ = 100100552. Its totient is φ = 100100550.

The previous prime is 100100537. The next prime is 100100579. The reversal of 100100551 is 155001001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100100551 - 2⁷ = 100100423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100100591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50050275 + 50050276.

It is an arithmetic number, because the mean of its divisors is an integer number (50050276).

Almost surely, 2^100100551 is an apocalyptic number.

100100551 is a deficient number, since it is larger than the sum of its proper divisors (1).

100100551 is an equidigital number, since it uses as much as digits as its factorization.

100100551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25, while the sum is 13.

The square root of 100100551 is about 10005.0262868220. The cubic root of 100100551 is about 464.3144033802.

Adding to 100100551 its reverse (155001001), we get a palindrome (255101552).

The spelling of 100100551 in words is "one hundred million, one hundred thousand, five hundred fifty-one".