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157039173 = 3247371251
BaseRepresentation
bin10010101110000…
…11101001000101
3101221111102020200
421113003221011
5310200223143
623325521113
73614545104
oct1127035105
9357442220
10157039173
118070a945
1244713199
13266c4bb5
1416bdc03b
15dbc01d3
hex95c3a45

157039173 has 12 divisors (see below), whose sum is σ = 231661248. Its totient is φ = 102465000.

The previous prime is 157039163. The next prime is 157039187. The reversal of 157039173 is 371930751.

It is not a de Polignac number, because 157039173 - 210 = 157038149 is a prime.

It is a super-2 number, since 2×1570391732 = 49322603713047858, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157039153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185203 + ... + 186048.

It is an arithmetic number, because the mean of its divisors is an integer number (19305104).

Almost surely, 2157039173 is an apocalyptic number.

It is an amenable number.

157039173 is a deficient number, since it is larger than the sum of its proper divisors (74622075).

157039173 is a wasteful number, since it uses less digits than its factorization.

157039173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371304 (or 371301 counting only the distinct ones).

The product of its (nonzero) digits is 19845, while the sum is 36.

The square root of 157039173 is about 12531.5271615235. The cubic root of 157039173 is about 539.5139350423.

The spelling of 157039173 in words is "one hundred fifty-seven million, thirty-nine thousand, one hundred seventy-three".

Divisors: 1 3 9 47 141 423 371251 1113753 3341259 17448797 52346391 157039173