90858751 has 2 divisors, whose sum is σ = 90858752. Its totient is φ = 90858750.

The previous prime is 90858749. The next prime is 90858787. The reversal of 90858751 is 15785809.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90858751 - 2¹ = 90858749 is a prime.

Together with 90858749, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 90858698 and 90858707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90858701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45429375 + 45429376.

It is an arithmetic number, because the mean of its divisors is an integer number (45429376).

Almost surely, 2^90858751 is an apocalyptic number.

90858751 is a deficient number, since it is larger than the sum of its proper divisors (1).

90858751 is an equidigital number, since it uses as much as digits as its factorization.

90858751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 43.

The square root of 90858751 is about 9531.9856798046. The cubic root of 90858751 is about 449.5613025013.

The spelling of 90858751 in words is "ninety million, eight hundred fifty-eight thousand, seven hundred fifty-one".