Search a number
-
+
51088025 = 525338557
BaseRepresentation
bin1100001011100…
…0101010011001
310120010112121002
43002320222121
5101034304100
65022554345
71160145452
oct302705231
9116115532
1051088025
112692420a
12151389b5
13a779701
146adc129
1547422d5
hex30b8a99

51088025 has 12 divisors (see below), whose sum is σ = 64546092. Its totient is φ = 40098240.

The previous prime is 51088021. The next prime is 51088039. The reversal of 51088025 is 52088015.

It can be written as a sum of positive squares in 6 ways, for example, as 692224 + 50395801 = 832^2 + 7099^2 .

It is not a de Polignac number, because 51088025 - 22 = 51088021 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51088021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17954 + ... + 20603.

It is an arithmetic number, because the mean of its divisors is an integer number (5378841).

Almost surely, 251088025 is an apocalyptic number.

It is an amenable number.

51088025 is a deficient number, since it is larger than the sum of its proper divisors (13458067).

51088025 is a wasteful number, since it uses less digits than its factorization.

51088025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38620 (or 38615 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 51088025 is about 7147.5887542583. The cubic root of 51088025 is about 371.0562101971.

The spelling of 51088025 in words is "fifty-one million, eighty-eight thousand, twenty-five".

Divisors: 1 5 25 53 265 1325 38557 192785 963925 2043521 10217605 51088025