91573414 has 4 divisors (see below), whose sum is σ = 137360124. Its totient is φ = 45786706.

The previous prime is 91573399. The next prime is 91573429. The reversal of 91573414 is 41437519.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (91573399) and next prime (91573429).

It is a self number, because there is not a number n which added to its sum of digits gives 91573414.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22893352 + ... + 22893355.

It is an arithmetic number, because the mean of its divisors is an integer number (34340031).

Almost surely, 2^91573414 is an apocalyptic number.

91573414 is a deficient number, since it is larger than the sum of its proper divisors (45786710).

91573414 is a wasteful number, since it uses less digits than its factorization.

91573414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45786709.

The product of its digits is 15120, while the sum is 34.

The square root of 91573414 is about 9569.3998766903. The cubic root of 91573414 is about 450.7369225937.

The spelling of 91573414 in words is "ninety-one million, five hundred seventy-three thousand, four hundred fourteen".