91652261 has 8 divisors (see below), whose sum is σ = 94043544. Its totient is φ = 89268480.

The previous prime is 91652243. The next prime is 91652279. The reversal of 91652261 is 16225619.

91652261 = 6769² + 6770².

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (91652243) and next prime (91652279).

It can be written as a sum of positive squares in 4 ways, for example, as 10201636 + 81450625 = 3194^2 + 9025^2 .

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

It is not a de Polignac number, because 91652261 - 2¹⁰ = 91651237 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 (91652201) 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, 29561 + ... + 32513.

It is an arithmetic number, because the mean of its divisors is an integer number (11755443).

Almost surely, 2^91652261 is an apocalyptic number.

91652261 is the 6770-th centered square number.

It is an amenable number.

91652261 is a deficient number, since it is larger than the sum of its proper divisors (2391283).

91652261 is a wasteful number, since it uses less digits than its factorization.

91652261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3751.

The product of its digits is 6480, while the sum is 32.

The square root of 91652261 is about 9573.5187365984. The cubic root of 91652261 is about 450.8662507375.

The spelling of 91652261 in words is "ninety-one million, six hundred fifty-two thousand, two hundred sixty-one".