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157133183 = 1097143239
BaseRepresentation
bin10010101110110…
…10100101111111
3101221200012012112
421113122211333
5310211230213
623331524235
73615416144
oct1127324577
9357605175
10157133183
1180774539
124475967b
132672891c
1416c243cb
15dbdcea8
hex95da97f

157133183 has 4 divisors (see below), whose sum is σ = 157277520. Its totient is φ = 156988848.

The previous prime is 157133161. The next prime is 157133189. The reversal of 157133183 is 381331751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 381331751 = 547697133.

It is a cyclic number.

It is not a de Polignac number, because 157133183 - 222 = 152938879 is a prime.

It is a super-2 number, since 2×1571331832 = 49381674399422978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157133189) 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, 70523 + ... + 72716.

It is an arithmetic number, because the mean of its divisors is an integer number (39319380).

Almost surely, 2157133183 is an apocalyptic number.

157133183 is a deficient number, since it is larger than the sum of its proper divisors (144337).

157133183 is a wasteful number, since it uses less digits than its factorization.

157133183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144336.

The product of its digits is 7560, while the sum is 32.

The square root of 157133183 is about 12535.2775398074. The cubic root of 157133183 is about 539.6215718535.

The spelling of 157133183 in words is "one hundred fifty-seven million, one hundred thirty-three thousand, one hundred eighty-three".

Divisors: 1 1097 143239 157133183