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157127481 = 32717295059
BaseRepresentation
bin10010101110110…
…01001100111001
3101221122220101100
421113121030321
5310211034411
623331442013
73615363420
oct1127311471
9357586340
10157127481
1180770225
1244756309
1326726154
1416c222b7
15dbdb456
hex95d9339

157127481 has 48 divisors (see below), whose sum is σ = 284169600. Its totient is φ = 81575424.

The previous prime is 157127459. The next prime is 157127483. The reversal of 157127481 is 184721751.

157127481 is a `hidden beast` number, since 1 + 57 + 127 + 481 = 666.

It is not a de Polignac number, because 157127481 - 25 = 157127449 is a prime.

It is a super-2 number, since 2×1571274812 = 49378090570810722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157127483) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28530 + ... + 33588.

It is an arithmetic number, because the mean of its divisors is an integer number (5920200).

Almost surely, 2157127481 is an apocalyptic number.

It is an amenable number.

157127481 is a deficient number, since it is larger than the sum of its proper divisors (127042119).

157127481 is a wasteful number, since it uses less digits than its factorization.

157127481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118 (or 5115 counting only the distinct ones).

The product of its digits is 15680, while the sum is 36.

The square root of 157127481 is about 12535.0500996207. The cubic root of 157127481 is about 539.6150445681.

The spelling of 157127481 in words is "one hundred fifty-seven million, one hundred twenty-seven thousand, four hundred eighty-one".

Divisors: 1 3 7 9 17 21 29 51 63 87 119 153 203 261 357 493 609 1071 1479 1827 3451 4437 5059 10353 15177 31059 35413 45531 86003 106239 146711 258009 318717 440133 602021 774027 1026977 1320399 1806063 2494087 3080931 5418189 7482261 9242793 17458609 22446783 52375827 157127481