91525423 has 8 divisors (see below), whose sum is σ = 103067136. Its totient is φ = 80520600.

The previous prime is 91525411. The next prime is 91525459. The reversal of 91525423 is 32452519.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91525423 - 2⁵ = 91525391 is a prime.

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 (91525463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133861 + ... + 134542.

It is an arithmetic number, because the mean of its divisors is an integer number (12883392).

Almost surely, 2^91525423 is an apocalyptic number.

91525423 is a deficient number, since it is larger than the sum of its proper divisors (11541713).

91525423 is a wasteful number, since it uses less digits than its factorization.

91525423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268445.

The product of its digits is 10800, while the sum is 31.

The square root of 91525423 is about 9566.8920240588. The cubic root of 91525423 is about 450.6581694033.

The spelling of 91525423 in words is "ninety-one million, five hundred twenty-five thousand, four hundred twenty-three".