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157827853 = 1271242739
BaseRepresentation
bin10010110100001…
…00001100001101
3101222222111010001
421122010030031
5310400442403
623354444301
73624341341
oct1132041415
9358874101
10157827853
11810a9447
1244a33691
132690cb81
1416d65621
15dcc8c1d
hex968430d

157827853 has 4 divisors (see below), whose sum is σ = 159070720. Its totient is φ = 156584988.

The previous prime is 157827841. The next prime is 157827869. The reversal of 157827853 is 358728751.

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-157827853 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 (157827823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621243 + ... + 621496.

It is an arithmetic number, because the mean of its divisors is an integer number (39767680).

Almost surely, 2157827853 is an apocalyptic number.

It is an amenable number.

157827853 is a deficient number, since it is larger than the sum of its proper divisors (1242867).

157827853 is a wasteful number, since it uses less digits than its factorization.

157827853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242866.

The product of its digits is 470400, while the sum is 46.

The square root of 157827853 is about 12562.9555837788. The cubic root of 157827853 is about 540.4156071180.

It can be divided in two parts, 157827 and 853, that multiplied together give a palindrome (134626431).

The spelling of 157827853 in words is "one hundred fifty-seven million, eight hundred twenty-seven thousand, eight hundred fifty-three".

Divisors: 1 127 1242739 157827853