91253072 has 20 divisors (see below), whose sum is σ = 179703156. Its totient is φ = 44878080.

The previous prime is 91253039. The next prime is 91253077. The reversal of 91253072 is 27035219.

91253072 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 2 ways, for example, as 34762816 + 56490256 = 5896^2 + 7516^2 .

It is a super-3 number, since 3×91253072³ (a number of 25 digits) contains 333 as substring.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45773 + ... + 47724.

Almost surely, 2^91253072 is an apocalyptic number.

It is an amenable number.

91253072 is a deficient number, since it is larger than the sum of its proper divisors (88450084).

91253072 is a wasteful number, since it uses less digits than its factorization.

91253072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93566 (or 93560 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 91253072 is about 9552.6473817471. The cubic root of 91253072 is about 450.2107194190.

The spelling of 91253072 in words is "ninety-one million, two hundred fifty-three thousand, seventy-two".