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91142097 = 3101300799
BaseRepresentation
bin1010110111010…
…11011111010001
320100111111110020
411123223133101
5141313021342
613013254053
72154460254
oct533533721
9210444406
1091142097
11474a1452
1226634329
1315b61a47
14c16709b
1580050ec
hex56eb7d1

91142097 has 8 divisors (see below), whose sum is σ = 122726400. Its totient is φ = 60159600.

The previous prime is 91142081. The next prime is 91142101. The reversal of 91142097 is 79024119.

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

It is not a de Polignac number, because 91142097 - 24 = 91142081 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (91142047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150097 + ... + 150702.

It is an arithmetic number, because the mean of its divisors is an integer number (15340800).

Almost surely, 291142097 is an apocalyptic number.

It is an amenable number.

91142097 is a deficient number, since it is larger than the sum of its proper divisors (31584303).

91142097 is a wasteful number, since it uses less digits than its factorization.

91142097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300903.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 91142097 is about 9546.8370154727. The cubic root of 91142097 is about 450.0281414500.

It can be divided in two parts, 9114 and 2097, that added together give a palindrome (11211).

The spelling of 91142097 in words is "ninety-one million, one hundred forty-two thousand, ninety-seven".

Divisors: 1 3 101 303 300799 902397 30380699 91142097