91253007 has 8 divisors (see below), whose sum is σ = 135189680. Its totient is φ = 60835320.

The previous prime is 91252981. The next prime is 91253023. The reversal of 91253007 is 70035219.

It is not a de Polignac number, because 91253007 - 2⁶ = 91252943 is a prime.

It is a super-2 number, since 2×91253007² = 16654222573084098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3379741 = 91253007 / (9 + 1 + 2 + 5 + 3 + 0 + 0 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91253077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1689844 + ... + 1689897.

It is an arithmetic number, because the mean of its divisors is an integer number (16898710).

Almost surely, 2^91253007 is an apocalyptic number.

91253007 is a deficient number, since it is larger than the sum of its proper divisors (43936673).

91253007 is a wasteful number, since it uses less digits than its factorization.

91253007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3379750 (or 3379744 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 91253007 is about 9552.6439795483. The cubic root of 91253007 is about 450.2106125232.

The spelling of 91253007 in words is "ninety-one million, two hundred fifty-three thousand, seven".