91598951 has 2 divisors, whose sum is σ = 91598952. Its totient is φ = 91598950.

The previous prime is 91598921. The next prime is 91598963. The reversal of 91598951 is 15989519.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91598951 - 2⁶ = 91598887 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 91598896 and 91598905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91598921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45799475 + 45799476.

It is an arithmetic number, because the mean of its divisors is an integer number (45799476).

Almost surely, 2^91598951 is an apocalyptic number.

91598951 is a deficient number, since it is larger than the sum of its proper divisors (1).

91598951 is an equidigital number, since it uses as much as digits as its factorization.

91598951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 47.

The square root of 91598951 is about 9570.7340888774. The cubic root of 91598951 is about 450.7788175735.

The spelling of 91598951 in words is "ninety-one million, five hundred ninety-eight thousand, nine hundred fifty-one".