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80551207 = 117322837
BaseRepresentation
bin1001100110100…
…01110100100111
312121120102111001
410303101310213
5131110114312
611554254131
71665450112
oct463216447
9177512431
1080551207
1141518350
1222b87347
13138c4249
14a9ab579
157112057
hex4cd1d27

80551207 has 4 divisors (see below), whose sum is σ = 87874056. Its totient is φ = 73228360.

The previous prime is 80551199. The next prime is 80551213. The reversal of 80551207 is 70215508.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80551207 - 23 = 80551199 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 (80551217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3661408 + ... + 3661429.

It is an arithmetic number, because the mean of its divisors is an integer number (21968514).

Almost surely, 280551207 is an apocalyptic number.

80551207 is a deficient number, since it is larger than the sum of its proper divisors (7322849).

80551207 is a wasteful number, since it uses less digits than its factorization.

80551207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7322848.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 80551207 is about 8975.0324233398. The cubic root of 80551207 is about 431.8742900544.

The spelling of 80551207 in words is "eighty million, five hundred fifty-one thousand, two hundred seven".

Divisors: 1 11 7322837 80551207