91558461 has 16 divisors (see below), whose sum is σ = 125654144. Its totient is φ = 59258304.

The previous prime is 91558459. The next prime is 91558463. The reversal of 91558461 is 16485519.

It is an interprime number because it is at equal distance from previous prime (91558459) and next prime (91558463).

It is not a de Polignac number, because 91558461 - 2¹ = 91558459 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 (91558463) 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, 94200 + ... + 95166.

It is an arithmetic number, because the mean of its divisors is an integer number (7853384).

Almost surely, 2^91558461 is an apocalyptic number.

It is an amenable number.

91558461 is a deficient number, since it is larger than the sum of its proper divisors (34095683).

91558461 is a wasteful number, since it uses less digits than its factorization.

91558461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860.

The product of its digits is 43200, while the sum is 39.

The square root of 91558461 is about 9568.6185523303. The cubic root of 91558461 is about 450.7123876849.

The spelling of 91558461 in words is "ninety-one million, five hundred fifty-eight thousand, four hundred sixty-one".