91253160 has 48 divisors (see below), whose sum is σ = 296573940. Its totient is φ = 24334080.

The previous prime is 91253153. The next prime is 91253171. The reversal of 91253160 is 6135219.

It can be written as a sum of positive squares in 2 ways, for example, as 87497316 + 3755844 = 9354^2 + 1938^2 .

It is a super-3 number, since 3×91253160³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126381 + ... + 127100.

Almost surely, 2^91253160 is an apocalyptic number.

91253160 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

91253160 is an abundant number, since it is smaller than the sum of its proper divisors (205320780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91253160 is a wasteful number, since it uses less digits than its factorization.

91253160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253498 (or 253491 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 91253160 is about 9552.6519877990. The cubic root of 91253160 is about 450.2108641393.

Adding to 91253160 its reverse (6135219), we get a palindrome (97388379).

The spelling of 91253160 in words is "ninety-one million, two hundred fifty-three thousand, one hundred sixty".