91132401 has 16 divisors (see below), whose sum is σ = 123516288. Its totient is φ = 59760000.

The previous prime is 91132399. The next prime is 91132409. The reversal of 91132401 is 10423119.

It is not a de Polignac number, because 91132401 - 2¹ = 91132399 is a prime.

It is a super-2 number, since 2×91132401² = 16610229024049602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91132409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49701 + ... + 51501.

It is an arithmetic number, because the mean of its divisors is an integer number (7719768).

Almost surely, 2^91132401 is an apocalyptic number.

It is an amenable number.

91132401 is a deficient number, since it is larger than the sum of its proper divisors (32383887).

91132401 is a wasteful number, since it uses less digits than its factorization.

91132401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 91132401 is about 9546.3291897986. The cubic root of 91132401 is about 450.0121823862.

The spelling of 91132401 in words is "ninety-one million, one hundred thirty-two thousand, four hundred one".