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253260149 = 325977711
BaseRepresentation
bin11110001100001…
…11000101110101
3122122112221121112
433012013011311
51004313311044
641044124405
76163450532
oct1706070565
9578487545
10253260149
1111aa6010a
1270996705
134061459c
14258c7d89
151737a09e
hexf187175

253260149 has 4 divisors (see below), whose sum is σ = 253341120. Its totient is φ = 253179180.

The previous prime is 253260143. The next prime is 253260151. The reversal of 253260149 is 941062352.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2k-253260149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253260143) 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, 35597 + ... + 42114.

It is an arithmetic number, because the mean of its divisors is an integer number (63335280).

Almost surely, 2253260149 is an apocalyptic number.

It is an amenable number.

253260149 is a deficient number, since it is larger than the sum of its proper divisors (80971).

253260149 is an equidigital number, since it uses as much as digits as its factorization.

253260149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80970.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 253260149 is about 15914.1493332192. The cubic root of 253260149 is about 632.6870607543.

The spelling of 253260149 in words is "two hundred fifty-three million, two hundred sixty thousand, one hundred forty-nine".

Divisors: 1 3259 77711 253260149