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157508085 = 3577320549
BaseRepresentation
bin10010110001101…
…10000111110101
3101222101020110210
421120312013311
5310310224320
623343540033
73621540150
oct1130660765
9358336423
10157508085
1180a00179
12448ba619
132682a467
1416cc0c97
15dc640e0
hex96361f5

157508085 has 32 divisors (see below), whose sum is σ = 291974400. Its totient is φ = 71013888.

The previous prime is 157508083. The next prime is 157508123. The reversal of 157508085 is 580805751.

It is not a de Polignac number, because 157508085 - 21 = 157508083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157508083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2610 + ... + 17939.

It is an arithmetic number, because the mean of its divisors is an integer number (9124200).

Almost surely, 2157508085 is an apocalyptic number.

157508085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157508085 is a deficient number, since it is larger than the sum of its proper divisors (134466315).

157508085 is a wasteful number, since it uses less digits than its factorization.

157508085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20637.

The product of its (nonzero) digits is 56000, while the sum is 39.

The square root of 157508085 is about 12550.2225079877. Note that the first 3 decimals coincide. The cubic root of 157508085 is about 540.0503896736.

The spelling of 157508085 in words is "one hundred fifty-seven million, five hundred eight thousand, eighty-five".

Divisors: 1 3 5 7 15 21 35 73 105 219 365 511 1095 1533 2555 7665 20549 61647 102745 143843 308235 431529 719215 1500077 2157645 4500231 7500385 10500539 22501155 31501617 52502695 157508085