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91052661 = 374335841
BaseRepresentation
bin1010110110101…
…01101001110101
320100022221202210
411123111221311
5141302141121
613011324033
72153635440
oct533255165
9210287683
1091052661
1147440237
12265b0619
1315b3011b
14c142657
157ed8876
hex56d5a75

91052661 has 8 divisors (see below), whose sum is σ = 138746944. Its totient is φ = 52030080.

The previous prime is 91052641. The next prime is 91052683. The reversal of 91052661 is 16625019.

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

It is not a de Polignac number, because 91052661 - 218 = 90790517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91052641) 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, 2167900 + ... + 2167941.

It is an arithmetic number, because the mean of its divisors is an integer number (17343368).

Almost surely, 291052661 is an apocalyptic number.

It is an amenable number.

91052661 is a deficient number, since it is larger than the sum of its proper divisors (47694283).

91052661 is a wasteful number, since it uses less digits than its factorization.

91052661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335851.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 91052661 is about 9542.1518013496. The cubic root of 91052661 is about 449.8808919335.

The spelling of 91052661 in words is "ninety-one million, fifty-two thousand, six hundred sixty-one".

Divisors: 1 3 7 21 4335841 13007523 30350887 91052661