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49971245 = 517587897
BaseRepresentation
bin1011111010100…
…0000000101101
310111000210122212
42332220000231
5100243034440
64543020205
71144514522
oct276500055
9114023585
1049971245
1126231155
121489a665
13a4782ac
1468cb149
1545c1465
hex2fa802d

49971245 has 8 divisors (see below), whose sum is σ = 63492984. Its totient is φ = 37625344.

The previous prime is 49971227. The next prime is 49971253. The reversal of 49971245 is 54217994.

It can be written as a sum of positive squares in 4 ways, for example, as 18139081 + 31832164 = 4259^2 + 5642^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 49971245 - 212 = 49967149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293864 + ... + 294033.

It is an arithmetic number, because the mean of its divisors is an integer number (7936623).

Almost surely, 249971245 is an apocalyptic number.

It is an amenable number.

49971245 is a deficient number, since it is larger than the sum of its proper divisors (13521739).

49971245 is a wasteful number, since it uses less digits than its factorization.

49971245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587919.

The product of its digits is 90720, while the sum is 41.

The square root of 49971245 is about 7069.0342338965. The cubic root of 49971245 is about 368.3325134375.

The spelling of 49971245 in words is "forty-nine million, nine hundred seventy-one thousand, two hundred forty-five".

Divisors: 1 5 17 85 587897 2939485 9994249 49971245