100780051 has 2 divisors, whose sum is σ = 100780052. Its totient is φ = 100780050.

The previous prime is 100780033. The next prime is 100780061. The reversal of 100780051 is 150087001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100780051 - 2⁵ = 100780019 is a prime.

It is not a weakly prime, because it can be changed into another prime (100780021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50390025 + 50390026.

It is an arithmetic number, because the mean of its divisors is an integer number (50390026).

Almost surely, 2^100780051 is an apocalyptic number.

100780051 is a deficient number, since it is larger than the sum of its proper divisors (1).

100780051 is an equidigital number, since it uses as much as digits as its factorization.

100780051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 100780051 is about 10038.9267852694. The cubic root of 100780051 is about 465.3626507698.

The spelling of 100780051 in words is "one hundred million, seven hundred eighty thousand, fifty-one".