90331751 has 2 divisors, whose sum is σ = 90331752. Its totient is φ = 90331750.

The previous prime is 90331729. The next prime is 90331753. The reversal of 90331751 is 15713309.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90331751 - 2¹⁸ = 90069607 is a prime.

Together with 90331753, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90331753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45165875 + 45165876.

It is an arithmetic number, because the mean of its divisors is an integer number (45165876).

Almost surely, 2^90331751 is an apocalyptic number.

90331751 is a deficient number, since it is larger than the sum of its proper divisors (1).

90331751 is an equidigital number, since it uses as much as digits as its factorization.

90331751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 90331751 is about 9504.3017102784. The cubic root of 90331751 is about 448.6904329911.

The spelling of 90331751 in words is "ninety million, three hundred thirty-one thousand, seven hundred fifty-one".