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52750257 = 372511917
BaseRepresentation
bin1100100100111…
…0011110110001
310200020222202020
43021032132301
5102001002012
65122342053
71210240560
oct311163661
9120228666
1052750257
112785a05a
12157ba929
13ac0c191
147011bd7
15496ea8c
hex324e7b1

52750257 has 8 divisors (see below), whose sum is σ = 80381376. Its totient is φ = 30142992.

The previous prime is 52750253. The next prime is 52750259. The reversal of 52750257 is 75205725.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52750257 - 22 = 52750253 is a prime.

It is a super-2 number, since 2×527502572 = 5565179227132098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52750253) 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, 1255938 + ... + 1255979.

It is an arithmetic number, because the mean of its divisors is an integer number (10047672).

Almost surely, 252750257 is an apocalyptic number.

It is an amenable number.

52750257 is a deficient number, since it is larger than the sum of its proper divisors (27631119).

52750257 is a wasteful number, since it uses less digits than its factorization.

52750257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511927.

The product of its (nonzero) digits is 24500, while the sum is 33.

The square root of 52750257 is about 7262.9372157551. The cubic root of 52750257 is about 375.0376424436.

The spelling of 52750257 in words is "fifty-two million, seven hundred fifty thousand, two hundred fifty-seven".

Divisors: 1 3 7 21 2511917 7535751 17583419 52750257