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57207025 = 522288281
BaseRepresentation
bin1101101000111…
…0100011110001
310222122102021201
43122032203301
5104121111100
65402051201
71263152221
oct332164361
9128572251
1057207025
112a323537
12171a9b01
13bb0c915
147852081
15505036a
hex368e8f1

57207025 has 6 divisors (see below), whose sum is σ = 70936742. Its totient is φ = 45765600.

The previous prime is 57207001. The next prime is 57207047. The reversal of 57207025 is 52070275.

It can be written as a sum of positive squares in 3 ways, for example, as 1495729 + 55711296 = 1223^2 + 7464^2 .

It is not a de Polignac number, because 57207025 - 211 = 57204977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57206984 and 57207002.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1144116 + ... + 1144165.

Almost surely, 257207025 is an apocalyptic number.

It is an amenable number.

57207025 is a deficient number, since it is larger than the sum of its proper divisors (13729717).

57207025 is a wasteful number, since it uses less digits than its factorization.

57207025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288291 (or 2288286 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 57207025 is about 7563.5325741349. The cubic root of 57207025 is about 385.3154776318.

The spelling of 57207025 in words is "fifty-seven million, two hundred seven thousand, twenty-five".

Divisors: 1 5 25 2288281 11441405 57207025