91740253 has 16 divisors (see below), whose sum is σ = 106882560. Its totient is φ = 77918400.

The previous prime is 91740241. The next prime is 91740263. The reversal of 91740253 is 35204719.

It is a cyclic number.

It is not a de Polignac number, because 91740253 - 2¹³ = 91732061 is a prime.

It is a super-3 number, since 3×91740253³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91740203) 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 in 15 ways as a sum of consecutive naturals, for example, 5251 + ... + 14527.

It is an arithmetic number, because the mean of its divisors is an integer number (6680160).

Almost surely, 2^91740253 is an apocalyptic number.

It is an amenable number.

91740253 is a deficient number, since it is larger than the sum of its proper divisors (15142307).

91740253 is a wasteful number, since it uses less digits than its factorization.

91740253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9348.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 91740253 is about 9578.1132275621. The cubic root of 91740253 is about 451.0104913464.

The spelling of 91740253 in words is "ninety-one million, seven hundred forty thousand, two hundred fifty-three".