91400527 has 4 divisors (see below), whose sum is σ = 91451200. Its totient is φ = 91349856.

The previous prime is 91400497. The next prime is 91400537. The reversal of 91400527 is 72500419.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72500419 = 97 ⋅747427.

It is a cyclic number.

It is not a de Polignac number, because 91400527 - 2⁷ = 91400399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91400495 and 91400504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91400537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22527 + ... + 26272.

It is an arithmetic number, because the mean of its divisors is an integer number (22862800).

Almost surely, 2^91400527 is an apocalyptic number.

91400527 is a deficient number, since it is larger than the sum of its proper divisors (50673).

91400527 is a wasteful number, since it uses less digits than its factorization.

91400527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50672.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 91400527 is about 9560.3622839305. The cubic root of 91400527 is about 450.4530860405.

The spelling of 91400527 in words is "ninety-one million, four hundred thousand, five hundred twenty-seven".