100545551 has 2 divisors, whose sum is σ = 100545552. Its totient is φ = 100545550.

The previous prime is 100545517. The next prime is 100545569. The reversal of 100545551 is 155545001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100545551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100545551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100542551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50272775 + 50272776.

It is an arithmetic number, because the mean of its divisors is an integer number (50272776).

Almost surely, 2^100545551 is an apocalyptic number.

100545551 is a deficient number, since it is larger than the sum of its proper divisors (1).

100545551 is an equidigital number, since it uses as much as digits as its factorization.

100545551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 100545551 is about 10027.2404478999. The cubic root of 100545551 is about 465.0014275210.

The spelling of 100545551 in words is "one hundred million, five hundred forty-five thousand, five hundred fifty-one".