91559651 has 8 divisors (see below), whose sum is σ = 96511680. Its totient is φ = 86620968.

The previous prime is 91559627. The next prime is 91559653. The reversal of 91559651 is 15695519.

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 91559651 - 2¹⁰ = 91558627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91559599 and 91559608.

It is not an unprimeable number, because it can be changed into a prime (91559653) 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, 12800 + ... + 18626.

It is an arithmetic number, because the mean of its divisors is an integer number (12063960).

Almost surely, 2^91559651 is an apocalyptic number.

91559651 is a deficient number, since it is larger than the sum of its proper divisors (4952029).

91559651 is a wasteful number, since it uses less digits than its factorization.

91559651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6673.

The product of its digits is 60750, while the sum is 41.

The square root of 91559651 is about 9568.6807345632. The cubic root of 91559651 is about 450.7143403368.

The spelling of 91559651 in words is "ninety-one million, five hundred fifty-nine thousand, six hundred fifty-one".