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79552081 = 722949627
BaseRepresentation
bin1001011110111…
…01111001010001
312112200122221101
410233131321101
5130331131311
611521024401
71654116160
oct457357121
9175618841
1079552081
11409a5724
1222785101
131363454b
14a7cb3d7
156eb5ec1
hex4bdde51

79552081 has 8 divisors (see below), whose sum is σ = 91315520. Its totient is φ = 67888368.

The previous prime is 79552079. The next prime is 79552093. The reversal of 79552081 is 18025597.

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 79552081 - 21 = 79552079 is a prime.

It is a super-2 number, since 2×795520812 = 12657067182861122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79552081.

It is not an unprimeable number, because it can be changed into a prime (79552181) 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, 23211 + ... + 26416.

It is an arithmetic number, because the mean of its divisors is an integer number (11414440).

Almost surely, 279552081 is an apocalyptic number.

It is an amenable number.

79552081 is a deficient number, since it is larger than the sum of its proper divisors (11763439).

79552081 is a wasteful number, since it uses less digits than its factorization.

79552081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49863.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 79552081 is about 8919.1973293565. The cubic root of 79552081 is about 430.0812556017.

The spelling of 79552081 in words is "seventy-nine million, five hundred fifty-two thousand, eighty-one".

Divisors: 1 7 229 1603 49627 347389 11364583 79552081