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75242243 = 1511812753
BaseRepresentation
bin1000111110000…
…01101100000011
312020120200221202
410133001230003
5123230222433
611244411415
71602356066
oct437015403
9166520852
1075242243
113952167a
1221246b6b
131278594b
149dc88dd
156913ee8
hex47c1b03

75242243 has 8 divisors (see below), whose sum is σ = 76186656. Its totient is φ = 74304000.

The previous prime is 75242231. The next prime is 75242249. The reversal of 75242243 is 34224257.

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 75242243 - 214 = 75225859 is a prime.

It is a super-2 number, since 2×752422432 = 11322790263342098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75242249) 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, 25955 + ... + 28707.

It is an arithmetic number, because the mean of its divisors is an integer number (9523332).

Almost surely, 275242243 is an apocalyptic number.

75242243 is a deficient number, since it is larger than the sum of its proper divisors (944413).

75242243 is a wasteful number, since it uses less digits than its factorization.

75242243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3085.

The product of its digits is 13440, while the sum is 29.

The square root of 75242243 is about 8674.2286688789. The cubic root of 75242243 is about 422.1698794942.

The spelling of 75242243 in words is "seventy-five million, two hundred forty-two thousand, two hundred forty-three".

Divisors: 1 151 181 2753 27331 415703 498293 75242243