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76520041 = 135886157
BaseRepresentation
bin1001000111110…
…01101001101001
312022222121202121
410203321221221
5124042120131
611332031241
71616260333
oct443715151
9168877677
1076520041
113a214704
1221762521
1312b12440
14a23c453
156ab7911
hex48f9a69

76520041 has 4 divisors (see below), whose sum is σ = 82406212. Its totient is φ = 70633872.

The previous prime is 76520029. The next prime is 76520051. The reversal of 76520041 is 14002567.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14002567 = 20896703.

It can be written as a sum of positive squares in 2 ways, for example, as 47403225 + 29116816 = 6885^2 + 5396^2 .

It is a cyclic number.

It is not a de Polignac number, because 76520041 - 211 = 76517993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76519988 and 76520015.

It is not an unprimeable number, because it can be changed into a prime (76520051) 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, 2943066 + ... + 2943091.

It is an arithmetic number, because the mean of its divisors is an integer number (20601553).

Almost surely, 276520041 is an apocalyptic number.

It is an amenable number.

76520041 is a deficient number, since it is larger than the sum of its proper divisors (5886171).

76520041 is a wasteful number, since it uses less digits than its factorization.

76520041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5886170.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 76520041 is about 8747.5734349590. The cubic root of 76520041 is about 424.5463043094.

The spelling of 76520041 in words is "seventy-six million, five hundred twenty thousand, forty-one".

Divisors: 1 13 5886157 76520041