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253078885 = 5311632767
BaseRepresentation
bin11110001010110…
…10110101100101
3122122012201222001
433011122311211
51004242011020
641040205301
76162064213
oct1705326545
9578181861
10253078885
1111a946a04
1270909831
134057cc27
142587bcb3
151734150a
hexf15ad65

253078885 has 8 divisors (see below), whose sum is σ = 313491456. Its totient is φ = 195931920.

The previous prime is 253078883. The next prime is 253078919. The reversal of 253078885 is 588870352.

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

It is not a de Polignac number, because 253078885 - 21 = 253078883 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 (253078883) 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, 816229 + ... + 816538.

It is an arithmetic number, because the mean of its divisors is an integer number (39186432).

Almost surely, 2253078885 is an apocalyptic number.

It is an amenable number.

253078885 is a deficient number, since it is larger than the sum of its proper divisors (60412571).

253078885 is a wasteful number, since it uses less digits than its factorization.

253078885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632803.

The product of its (nonzero) digits is 537600, while the sum is 46.

The square root of 253078885 is about 15908.4532560523. The cubic root of 253078885 is about 632.5360819298.

The spelling of 253078885 in words is "two hundred fifty-three million, seventy-eight thousand, eight hundred eighty-five".

Divisors: 1 5 31 155 1632767 8163835 50615777 253078885