100390651 has 2 divisors, whose sum is σ = 100390652. Its totient is φ = 100390650.

The previous prime is 100390621. The next prime is 100390691. The reversal of 100390651 is 156093001.

It is a weak prime.

It is an emirp because it is prime and its reverse (156093001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100390651 - 2¹⁵ = 100357883 is a prime.

It is not a weakly prime, because it can be changed into another prime (100390621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50195325 + 50195326.

It is an arithmetic number, because the mean of its divisors is an integer number (50195326).

Almost surely, 2^100390651 is an apocalyptic number.

100390651 is a deficient number, since it is larger than the sum of its proper divisors (1).

100390651 is an equidigital number, since it uses as much as digits as its factorization.

100390651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 100390651 is about 10019.5135111441. The cubic root of 100390651 is about 464.7625117886.

The spelling of 100390651 in words is "one hundred million, three hundred ninety thousand, six hundred fifty-one".