91154461 has 4 divisors (see below), whose sum is σ = 91617372. Its totient is φ = 90691552.

The previous prime is 91154449. The next prime is 91154467. The reversal of 91154461 is 16445119.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52838361 + 38316100 = 7269^2 + 6190^2 .

It is a cyclic number.

It is not a de Polignac number, because 91154461 - 2⁵ = 91154429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91154467) 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, 231160 + ... + 231553.

It is an arithmetic number, because the mean of its divisors is an integer number (22904343).

Almost surely, 2^91154461 is an apocalyptic number.

It is an amenable number.

91154461 is a deficient number, since it is larger than the sum of its proper divisors (462911).

91154461 is a wasteful number, since it uses less digits than its factorization.

91154461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462910.

The product of its digits is 4320, while the sum is 31.

The square root of 91154461 is about 9547.4845378246. The cubic root of 91154461 is about 450.0484902479.

The spelling of 91154461 in words is "ninety-one million, one hundred fifty-four thousand, four hundred sixty-one".