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51025241 = 192685539
BaseRepresentation
bin1100001010100…
…1010101011001
310120000100110202
43002221111121
5101030301431
65021351545
71156464431
oct302512531
9116010422
1051025241
1126891023
12151085b5
13a756c67
146ac32c1
15472d8cb
hex30a9559

51025241 has 4 divisors (see below), whose sum is σ = 53710800. Its totient is φ = 48339684.

The previous prime is 51025237. The next prime is 51025259. The reversal of 51025241 is 14252015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51025241 - 22 = 51025237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51025291) 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, 1342751 + ... + 1342788.

It is an arithmetic number, because the mean of its divisors is an integer number (13427700).

Almost surely, 251025241 is an apocalyptic number.

It is an amenable number.

51025241 is a deficient number, since it is larger than the sum of its proper divisors (2685559).

51025241 is a wasteful number, since it uses less digits than its factorization.

51025241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2685558.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 51025241 is about 7143.1954334177. The cubic root of 51025241 is about 370.9041462323.

Adding to 51025241 its reverse (14252015), we get a palindrome (65277256).

The spelling of 51025241 in words is "fifty-one million, twenty-five thousand, two hundred forty-one".

Divisors: 1 19 2685539 51025241